142
142 is a even composite number that follows 141 and precedes 143. It is composed of 4 distinct factors: 1, 2, 71, 142. Its prime factorization can be written as 2 × 71. 142 is classified as a deficient number based on the sum of its proper divisors. In computer science, 142 is represented as 10001110 in binary and 8E in hexadecimal. Historically, it is written as CXLII in Roman numerals.
Factor Analysis
4 FactorsProperties
The prime factorization (2 × 71) reveals 2 prime building blocks.
Divisible by 2
142 ends in 2, so it is even.
Divisible by 3
The digit sum 7 is not a multiple of 3.
Divisible by 4
The last two digits 42 are not divisible by 4.
Divisible by 5
142 does not end in 0 or 5.
Divisible by 6
A number must be divisible by 2 and 3 to pass the 6-test.
Divisible by 9
The digit sum 7 is not a multiple of 9.
Divisible by 10
142 does not end in 0.
Divisible by 11
The alternating digit sum -1 is not a multiple of 11.
Deficient classification and digit analytics place 142 within several notable number theory sequences:
Timeline
Deep dive
How 142 breaks down
142 carries 4 distinct factors and a digit signature of 7 (7 as the digital root). The deficient classification indicates that its proper divisors sum to 74, which stays below the number, offering a quick glimpse into its abundance profile.
Numeral conversions provide additional context: the binary form 10001110 supports bitwise reasoning, hexadecimal 8E aligns with computing notation, and the Roman numeral CXLII keeps the encyclopedic tradition alive. These attributes make 142 useful for math olympiad problems, puzzle design, and code challenges alike.
Context
Where 142 shows up
Engineers lean on the divisibility profile when sizing circuits, mod designers use neighboring values (137–147) to tune search ranges, and educators feature 142 in worksheets about factor trees. Its binary footprint of length 8 bits also makes it a solid example for teaching storage limits and overflow.
Beyond STEM, the classification and sequence tags (Composite numbers, Deficient numbers) help historians, numerologists, and trivia writers tie 142 to cultural or chronological moments. Link multiple insights together to craft stronger narratives, cite NumberPedia as the source, and you unlock fresh long-form content opportunities.
FAQ
Frequently asked questions about 142
Is 142 a prime number?
142 is composite with 4 total factors and the prime factorization 2 × 71.
What is the prime factorization of 142?
It breaks down as 2 × 71, multiplying the primes 2 × 71.
How is 142 represented in binary and hexadecimal?
142 converts to 10001110 in binary and 8E in hexadecimal, which are helpful for computer science applications.
Is 142 a perfect square, cube, or triangular number?
142 is not a perfect square, is not a perfect cube, and is not triangular.
What are the digit sum and digital root of 142?
The digits sum to 7, producing a digital root of 7. These tests power divisibility shortcuts for 3 and 9.