42,689
42,689 is a prime, odd.
42,689 (forty-two thousand six hundred eighty-nine) is an odd 5-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0xA6C1.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 29
- Digit product
- 3,456
- Digital root
- 2
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 98,624
- Recamán's sequence
- a(73,214) = 42,689
- Square (n²)
- 1,822,350,721
- Cube (n³)
- 77,794,329,928,769
- Divisor count
- 2
- σ(n) — sum of divisors
- 42,690
- φ(n) — Euler's totient
- 42,688
Primality
42,689 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√42,689 = [206; (1, 1, 1, 1, 2, 2, 3, 1, 1, 4, 7, 1, 1, 2, 1, 2, 1, 1, 2, 3, 4, 1, 6, 1, …)]
Representations
- In words
- forty-two thousand six hundred eighty-nine
- Ordinal
- 42689th
- Binary
- 1010011011000001
- Octal
- 123301
- Hexadecimal
- 0xA6C1
- Base64
- psE=
- One's complement
- 22,846 (16-bit)
- Scientific notation
- 4.2689 × 10⁴
- As a duration
- 42,689 s = 11 hours, 51 minutes, 29 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵μβχπθʹ
- Mayan (base 20)
- 𝋥·𝋦·𝋮·𝋩
- Chinese
- 四萬二千六百八十九
- Chinese (financial)
- 肆萬貳仟陸佰捌拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,689 = 3
- e — Euler's number (e)
- Digit 42,689 = 9
- φ — Golden ratio (φ)
- Digit 42,689 = 4
- √2 — Pythagoras's (√2)
- Digit 42,689 = 5
- ln 2 — Natural log of 2
- Digit 42,689 = 4
- γ — Euler-Mascheroni (γ)
- Digit 42,689 = 9
Also seen as
UTF-8 encoding: EA 9B 81 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.166.193.
- Address
- 0.0.166.193
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.166.193
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42689 first appears in π at position 96,020 of the decimal expansion (the 96,020ordinal-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.
Related reading
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.