42,660
42,660 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 18
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 6,624
- Recamán's sequence
- a(73,272) = 42,660
- Square (n²)
- 1,819,875,600
- Cube (n³)
- 77,635,893,096,000
- Divisor count
- 48
- σ(n) — sum of divisors
- 134,400
- φ(n) — Euler's totient
- 11,232
- Sum of prime factors
- 97
Primality
Prime factorization: 2 2 × 3 3 × 5 × 79
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand six hundred sixty
- Ordinal
- 42660th
- Binary
- 1010011010100100
- Octal
- 123244
- Hexadecimal
- 0xA6A4
- Base64
- pqQ=
- One's complement
- 22,875 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹 ·
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵μβχξʹ
- Mayan (base 20)
- 𝋥·𝋦·𝋭·𝋠
- Chinese
- 四萬二千六百六十
- Chinese (financial)
- 肆萬貳仟陸佰陸拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,660 = 2
- e — Euler's number (e)
- Digit 42,660 = 7
- φ — Golden ratio (φ)
- Digit 42,660 = 1
- √2 — Pythagoras's (√2)
- Digit 42,660 = 9
- ln 2 — Natural log of 2
- Digit 42,660 = 9
- γ — Euler-Mascheroni (γ)
- Digit 42,660 = 1
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42660, here are decompositions:
- 11 + 42649 = 42660
- 17 + 42643 = 42660
- 19 + 42641 = 42660
- 71 + 42589 = 42660
- 83 + 42577 = 42660
- 89 + 42571 = 42660
- 103 + 42557 = 42660
- 127 + 42533 = 42660
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 9A A4 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.166.164.
- Address
- 0.0.166.164
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.166.164
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 42660 first appears in π at position 200,578 of the decimal expansion (the 200,578ordinal-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.