42,664
42,664 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 22
- Digit product
- 1,152
- Digital root
- 4
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 46,624
- Recamán's sequence
- a(73,264) = 42,664
- Square (n²)
- 1,820,216,896
- Cube (n³)
- 77,657,733,650,944
- Divisor count
- 8
- σ(n) — sum of divisors
- 80,010
- φ(n) — Euler's totient
- 21,328
- Sum of prime factors
- 5,339
Primality
Prime factorization: 2 3 × 5333
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand six hundred sixty-four
- Ordinal
- 42664th
- Binary
- 1010011010101000
- Octal
- 123250
- Hexadecimal
- 0xA6A8
- Base64
- pqg=
- One's complement
- 22,871 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹 𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵μβχξδʹ
- Mayan (base 20)
- 𝋥·𝋦·𝋭·𝋤
- Chinese
- 四萬二千六百六十四
- Chinese (financial)
- 肆萬貳仟陸佰陸拾肆
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,664 = 3
- e — Euler's number (e)
- Digit 42,664 = 0
- φ — Golden ratio (φ)
- Digit 42,664 = 8
- √2 — Pythagoras's (√2)
- Digit 42,664 = 0
- ln 2 — Natural log of 2
- Digit 42,664 = 4
- γ — Euler-Mascheroni (γ)
- Digit 42,664 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42664, here are decompositions:
- 23 + 42641 = 42664
- 53 + 42611 = 42664
- 107 + 42557 = 42664
- 131 + 42533 = 42664
- 173 + 42491 = 42664
- 191 + 42473 = 42664
- 197 + 42467 = 42664
- 227 + 42437 = 42664
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 9A A8 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.166.168.
- Address
- 0.0.166.168
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.166.168
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42664 first appears in π at position 15,097 of the decimal expansion (the 15,097ordinal-suffix:th 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.