18,142
18,142 is a composite number, even.
18,142 (eighteen thousand one hundred forty-two) is an even 5-digit number. It is a composite number with 8 divisors, and factors as 2 × 47 × 193. Written other ways, in hexadecimal, 0x46DE.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 16
- Digit product
- 64
- Digital root
- 7
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 24,181
- Recamán's sequence
- a(15,560) = 18,142
- Square (n²)
- 329,132,164
- Cube (n³)
- 5,971,115,719,288
- Divisor count
- 8
- σ(n) — sum of divisors
- 27,936
- φ(n) — Euler's totient
- 8,832
- Sum of prime factors
- 242
Primality
Prime factorization: 2 × 47 × 193
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√18,142 = [134; (1, 2, 4, 89, 1, 1, 3, 2, 2, 29, 1, 1, 11, 4, 1, 9, 5, 1, 3, 14, 1, 2, 2, 1, …)]
Representations
- In words
- eighteen thousand one hundred forty-two
- Ordinal
- 18142nd
- Binary
- 100011011011110
- Octal
- 43336
- Hexadecimal
- 0x46DE
- Base64
- Rt4=
- One's complement
- 47,393 (16-bit)
- Scientific notation
- 1.8142 × 10⁴
- As a duration
- 18,142 s = 5 hours, 2 minutes, 22 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ιηρμβʹ
- Mayan (base 20)
- 𝋢·𝋥·𝋧·𝋢
- Chinese
- 一萬八千一百四十二
- Chinese (financial)
- 壹萬捌仟壹佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 18,142 = 1
- e — Euler's number (e)
- Digit 18,142 = 1
- φ — Golden ratio (φ)
- Digit 18,142 = 9
- √2 — Pythagoras's (√2)
- Digit 18,142 = 9
- ln 2 — Natural log of 2
- Digit 18,142 = 4
- γ — Euler-Mascheroni (γ)
- Digit 18,142 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 18142, here are decompositions:
- 11 + 18131 = 18142
- 23 + 18119 = 18142
- 53 + 18089 = 18142
- 83 + 18059 = 18142
- 101 + 18041 = 18142
- 233 + 17909 = 18142
- 239 + 17903 = 18142
- 251 + 17891 = 18142
Showing the first eight; more decompositions exist.
UTF-8 encoding: E4 9B 9E (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.70.222.
- Address
- 0.0.70.222
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.70.222
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 18,142 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C♯10 (17739.7 Hz, +39¢)
- Scientific pitch (C4 = 256 Hz): D10 (18390.4 Hz, -24¢)
- Baroque pitch (A4 = 415 Hz): D10 (17726.7 Hz, +40¢)
The digit sequence 18142 first appears in π at position 54,072 of the decimal expansion (the 54,072ordinal-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.
Related reading
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.