Number
422
422 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 8
- Digital root
- 8
- Palindrome
- No
- Divisor count
- 4
- σ(n) — sum of divisors
- 636
Primality
Prime factorization: 2 × 211
Divisors & multiples
Aliquot sum (sum of proper divisors):
214
Representations
- In words
- four hundred twenty-two
- Ordinal
- 422nd
- Roman numeral
- CDXXII
- Binary
- 110100110
- Octal
- 646
- Hexadecimal
- 1A6
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 422, here are decompositions:
- 3 + 419 = 422
- 13 + 409 = 422
- 43 + 379 = 422
- 73 + 349 = 422
- 109 + 313 = 422
- 139 + 283 = 422
- 151 + 271 = 422
- 181 + 241 = 422
Showing the first eight; more decompositions exist.
Unicode codepoint
Ʀ
U+01A6
Uppercase letter (Lu)
UTF-8 encoding: C6 A6 (2 bytes).
HTTP status code
HTTP 422 Unprocessable Entity — Request was well-formed but semantically invalid.
4xx class: Client Error.
Hex color
#0001A6
RGB(0, 1, 166)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.166.