84,042
84,042 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 18
- Digital root
- 9
- Palindrome
- No
- Reversed
- 24,048
- Divisor count
- 48
- σ(n) — sum of divisors
- 224,640
Primality
Prime factorization: 2 × 3 2 × 7 × 23 × 29
Divisors & multiples
Representations
- In words
- eighty-four thousand forty-two
- Ordinal
- 84042nd
- Binary
- 10100100001001010
- Octal
- 244112
- Hexadecimal
- 0x1484A
- Base64
- AUhK
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 84042, here are decompositions:
- 31 + 84011 = 84042
- 59 + 83983 = 84042
- 73 + 83969 = 84042
- 103 + 83939 = 84042
- 109 + 83933 = 84042
- 131 + 83911 = 84042
- 139 + 83903 = 84042
- 151 + 83891 = 84042
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.72.74.
- Address
- 0.1.72.74
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.72.74
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.