20,142
20,142 is a composite number, even.
20,142 (twenty thousand one hundred forty-two) is an even 5-digit number. It is a composite number with 16 divisors, and factors as 2 × 3³ × 373. Its proper divisors sum to 24,738, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x4EAE.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 9
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 24,102
- Square (n²)
- 405,700,164
- Cube (n³)
- 8,171,612,703,288
- Divisor count
- 16
- σ(n) — sum of divisors
- 44,880
- φ(n) — Euler's totient
- 6,696
- Sum of prime factors
- 384
Primality
Prime factorization: 2 × 3 3 × 373
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√20,142 = [141; (1, 11, 1, 9, 1, 1, 2, 3, 2, 31, 9, 1, 3, 10, 3, 1, 9, 31, 2, 3, 2, 1, 1, 9, …)]
Period length 28 — the block in parentheses repeats forever.
Representations
- In words
- twenty thousand one hundred forty-two
- Ordinal
- 20142nd
- Binary
- 100111010101110
- Octal
- 47256
- Hexadecimal
- 0x4EAE
- Base64
- Tq4=
- One's complement
- 45,393 (16-bit)
- Scientific notation
- 2.0142 × 10⁴
- As a duration
- 20,142 s = 5 hours, 35 minutes, 42 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵κρμβʹ
- Mayan (base 20)
- 𝋢·𝋪·𝋧·𝋢
- Chinese
- 二萬零一百四十二
- Chinese (financial)
- 貳萬零壹佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 20,142 = 7
- e — Euler's number (e)
- Digit 20,142 = 5
- φ — Golden ratio (φ)
- Digit 20,142 = 9
- √2 — Pythagoras's (√2)
- Digit 20,142 = 3
- ln 2 — Natural log of 2
- Digit 20,142 = 7
- γ — Euler-Mascheroni (γ)
- Digit 20,142 = 6
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 20142, here are decompositions:
- 13 + 20129 = 20142
- 19 + 20123 = 20142
- 29 + 20113 = 20142
- 41 + 20101 = 20142
- 53 + 20089 = 20142
- 71 + 20071 = 20142
- 79 + 20063 = 20142
- 113 + 20029 = 20142
Showing the first eight; more decompositions exist.
UTF-8 encoding: E4 BA AE (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.78.174.
- Address
- 0.0.78.174
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.78.174
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 20142 first appears in π at position 281,843 of the decimal expansion (the 281,843ordinal-suffix:rd 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°.