42,686
42,686 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 26
- Digit product
- 2,304
- Digital root
- 8
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 68,624
- Recamán's sequence
- a(73,220) = 42,686
- Square (n²)
- 1,822,094,596
- Cube (n³)
- 77,777,929,924,856
- Divisor count
- 8
- σ(n) — sum of divisors
- 73,200
- φ(n) — Euler's totient
- 18,288
- Sum of prime factors
- 3,058
Primality
Prime factorization: 2 × 7 × 3049
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand six hundred eighty-six
- Ordinal
- 42686th
- Binary
- 1010011010111110
- Octal
- 123276
- Hexadecimal
- 0xA6BE
- Base64
- pr4=
- One's complement
- 22,849 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵μβχπϛʹ
- Mayan (base 20)
- 𝋥·𝋦·𝋮·𝋦
- Chinese
- 四萬二千六百八十六
- Chinese (financial)
- 肆萬貳仟陸佰捌拾陸
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,686 = 6
- e — Euler's number (e)
- Digit 42,686 = 3
- φ — Golden ratio (φ)
- Digit 42,686 = 8
- √2 — Pythagoras's (√2)
- Digit 42,686 = 5
- ln 2 — Natural log of 2
- Digit 42,686 = 9
- γ — Euler-Mascheroni (γ)
- Digit 42,686 = 6
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42686, here are decompositions:
- 3 + 42683 = 42686
- 19 + 42667 = 42686
- 37 + 42649 = 42686
- 43 + 42643 = 42686
- 97 + 42589 = 42686
- 109 + 42577 = 42686
- 199 + 42487 = 42686
- 223 + 42463 = 42686
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 9A BE (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.166.190.
- Address
- 0.0.166.190
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.166.190
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 42686 first appears in π at position 23,170 of the decimal expansion (the 23,170ordinal-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.