42,440
42,440 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 14
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 4,424
- Recamán's sequence
- a(150,743) = 42,440
- Square (n²)
- 1,801,153,600
- Cube (n³)
- 76,440,958,784,000
- Divisor count
- 16
- σ(n) — sum of divisors
- 95,580
- φ(n) — Euler's totient
- 16,960
- Sum of prime factors
- 1,072
Primality
Prime factorization: 2 3 × 5 × 1061
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand four hundred forty
- Ordinal
- 42440th
- Binary
- 1010010111001000
- Octal
- 122710
- Hexadecimal
- 0xA5C8
- Base64
- pcg=
- One's complement
- 23,095 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵μβυμʹ
- Mayan (base 20)
- 𝋥·𝋦·𝋢·𝋠
- Chinese
- 四萬二千四百四十
- Chinese (financial)
- 肆萬貳仟肆佰肆拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,440 = 3
- e — Euler's number (e)
- Digit 42,440 = 3
- φ — Golden ratio (φ)
- Digit 42,440 = 0
- √2 — Pythagoras's (√2)
- Digit 42,440 = 2
- ln 2 — Natural log of 2
- Digit 42,440 = 1
- γ — Euler-Mascheroni (γ)
- Digit 42,440 = 6
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42440, here are decompositions:
- 3 + 42437 = 42440
- 7 + 42433 = 42440
- 31 + 42409 = 42440
- 37 + 42403 = 42440
- 43 + 42397 = 42440
- 61 + 42379 = 42440
- 67 + 42373 = 42440
- 103 + 42337 = 42440
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 97 88 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.165.200.
- Address
- 0.0.165.200
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.165.200
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.
The digit sequence 42440 first appears in π at position 13,082 of the decimal expansion (the 13,082ordinal-suffix:nd digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.