Number
142
142 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 7
- Digital root
- 7
- Palindrome
- No
- Divisor count
- 4
- σ(n) — sum of divisors
- 216
Primality
Prime factorization: 2 × 71
Divisors & multiples
Aliquot sum (sum of proper divisors):
74
Representations
- In words
- one hundred forty-two
- Ordinal
- 142nd
- Roman numeral
- CXLII
- Binary
- 10001110
- Octal
- 216
- Hexadecimal
- 8E
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 142, here are decompositions:
- 3 + 139 = 142
- 5 + 137 = 142
- 11 + 131 = 142
- 29 + 113 = 142
- 41 + 101 = 142
- 53 + 89 = 142
- 59 + 83 = 142
- 71 + 71 = 142
Showing the first eight; more decompositions exist.
Unicode codepoint
U+008E
Control character (Cc)
UTF-8 encoding: C2 8E (2 bytes).
Hex color
#00008E
RGB(0, 0, 142)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.142.