42,668
42,668 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
- 86,624
- Recamán's sequence
- a(73,256) = 42,668
- Square (n²)
- 1,820,558,224
- Cube (n³)
- 77,679,578,301,632
- Divisor count
- 6
- σ(n) — sum of divisors
- 74,676
- φ(n) — Euler's totient
- 21,332
- Sum of prime factors
- 10,671
Primality
Prime factorization: 2 2 × 10667
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand six hundred sixty-eight
- Ordinal
- 42668th
- Binary
- 1010011010101100
- Octal
- 123254
- Hexadecimal
- 0xA6AC
- Base64
- pqw=
- One's complement
- 22,867 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵μβχξηʹ
- Mayan (base 20)
- 𝋥·𝋦·𝋭·𝋨
- Chinese
- 四萬二千六百六十八
- Chinese (financial)
- 肆萬貳仟陸佰陸拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,668 = 7
- e — Euler's number (e)
- Digit 42,668 = 2
- φ — Golden ratio (φ)
- Digit 42,668 = 7
- √2 — Pythagoras's (√2)
- Digit 42,668 = 0
- ln 2 — Natural log of 2
- Digit 42,668 = 1
- γ — Euler-Mascheroni (γ)
- Digit 42,668 = 3
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42668, here are decompositions:
- 19 + 42649 = 42668
- 79 + 42589 = 42668
- 97 + 42571 = 42668
- 181 + 42487 = 42668
- 211 + 42457 = 42668
- 271 + 42397 = 42668
- 277 + 42391 = 42668
- 331 + 42337 = 42668
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 9A AC (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.166.172.
- Address
- 0.0.166.172
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.166.172
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42668 first appears in π at position 76,492 of the decimal expansion (the 76,492ordinal-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.