Number
1,142
1,142 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 8
- Digital root
- 8
- Palindrome
- No
- Divisor count
- 4
- σ(n) — sum of divisors
- 1,716
Primality
Prime factorization: 2 × 571
Divisors & multiples
Aliquot sum (sum of proper divisors):
574
First multiples
Representations
- In words
- one thousand one hundred forty-two
- Ordinal
- 1142nd
- Roman numeral
- MCXLII
- Binary
- 10001110110
- Octal
- 2166
- Hexadecimal
- 476
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1142, here are decompositions:
- 13 + 1129 = 1142
- 19 + 1123 = 1142
- 73 + 1069 = 1142
- 79 + 1063 = 1142
- 103 + 1039 = 1142
- 109 + 1033 = 1142
- 151 + 991 = 1142
- 223 + 919 = 1142
Showing the first eight; more decompositions exist.
Unicode codepoint
Ѷ
U+0476
Uppercase letter (Lu)
UTF-8 encoding: D1 B6 (2 bytes).
Hex color
#000476
RGB(0, 4, 118)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.118.