Number
140
140 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 5
- Digital root
- 5
- Palindrome
- No
- Divisor count
- 12
- σ(n) — sum of divisors
- 336
Primality
Prime factorization: 2 2 × 5 × 7
Divisors & multiples
Aliquot sum (sum of proper divisors):
196
Representations
- In words
- one hundred forty
- Ordinal
- 140th
- Roman numeral
- CXL
- Binary
- 10001100
- Octal
- 214
- Hexadecimal
- 8C
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 140, here are decompositions:
- 3 + 137 = 140
- 13 + 127 = 140
- 31 + 109 = 140
- 37 + 103 = 140
- 43 + 97 = 140
- 61 + 79 = 140
- 67 + 73 = 140
Unicode codepoint
U+008C
Control character (Cc)
UTF-8 encoding: C2 8C (2 bytes).
Hex color
#00008C
RGB(0, 0, 140)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.140.