102,042
102,042 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 9
- Digital root
- 9
- Palindrome
- No
- Reversed
- 240,201
- Divisor count
- 12
- σ(n) — sum of divisors
- 221,130
Primality
Prime factorization: 2 × 3 2 × 5669
Divisors & multiples
Representations
- In words
- one hundred two thousand forty-two
- Ordinal
- 102042nd
- Binary
- 11000111010011010
- Octal
- 307232
- Hexadecimal
- 0x18E9A
- Base64
- AY6a
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 102042, here are decompositions:
- 11 + 102031 = 102042
- 19 + 102023 = 102042
- 23 + 102019 = 102042
- 29 + 102013 = 102042
- 41 + 102001 = 102042
- 43 + 101999 = 102042
- 79 + 101963 = 102042
- 103 + 101939 = 102042
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.142.154.
- Address
- 0.1.142.154
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.142.154
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 102,042 and was likely granted around 1870.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.