42,318
42,318 is a composite number, even.
42,318 (forty-two thousand three hundred eighteen) is an even 5-digit number. It is a composite number with 12 divisors, and factors as 2 × 3² × 2,351. Its proper divisors sum to 49,410, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xA54E.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 18
- Digit product
- 192
- Digital root
- 9
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 81,324
- Recamán's sequence
- a(150,987) = 42,318
- Square (n²)
- 1,790,813,124
- Cube (n³)
- 75,783,629,781,432
- Divisor count
- 12
- σ(n) — sum of divisors
- 91,728
- φ(n) — Euler's totient
- 14,100
- Sum of prime factors
- 2,359
Primality
Prime factorization: 2 × 3 2 × 2351
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√42,318 = [205; (1, 2, 2, 22, 2, 2, 1, 410)]
Period length 8 — the block in parentheses repeats forever.
Representations
- In words
- forty-two thousand three hundred eighteen
- Ordinal
- 42318th
- Binary
- 1010010101001110
- Octal
- 122516
- Hexadecimal
- 0xA54E
- Base64
- pU4=
- One's complement
- 23,217 (16-bit)
- Scientific notation
- 4.2318 × 10⁴
- As a duration
- 42,318 s = 11 hours, 45 minutes, 18 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵μβτιηʹ
- Mayan (base 20)
- 𝋥·𝋥·𝋯·𝋲
- Chinese
- 四萬二千三百一十八
- Chinese (financial)
- 肆萬貳仟參佰壹拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,318 = 9
- e — Euler's number (e)
- Digit 42,318 = 9
- φ — Golden ratio (φ)
- Digit 42,318 = 8
- √2 — Pythagoras's (√2)
- Digit 42,318 = 3
- ln 2 — Natural log of 2
- Digit 42,318 = 1
- γ — Euler-Mascheroni (γ)
- Digit 42,318 = 1
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42318, here are decompositions:
- 11 + 42307 = 42318
- 19 + 42299 = 42318
- 37 + 42281 = 42318
- 61 + 42257 = 42318
- 79 + 42239 = 42318
- 97 + 42221 = 42318
- 109 + 42209 = 42318
- 131 + 42187 = 42318
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 95 8E (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.165.78.
- Address
- 0.0.165.78
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.165.78
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42318 first appears in π at position 116,498 of the decimal expansion (the 116,498ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.