47,142
47,142 is a composite number, even.
47,142 (forty-seven thousand one hundred forty-two) is an even 5-digit number. It is a composite number with 24 divisors, and factors as 2 × 3⁵ × 97. Its proper divisors sum to 59,874, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xB826.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 18
- Digit product
- 224
- Digital root
- 9
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 24,174
- Recamán's sequence
- a(147,923) = 47,142
- Square (n²)
- 2,222,368,164
- Cube (n³)
- 104,766,879,987,288
- Divisor count
- 24
- σ(n) — sum of divisors
- 107,016
- φ(n) — Euler's totient
- 15,552
- Sum of prime factors
- 114
Primality
Prime factorization: 2 × 3 5 × 97
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√47,142 = [217; (8, 5, 4, 4, 4, 5, 8, 434)]
Period length 8 — the block in parentheses repeats forever.
Representations
- In words
- forty-seven thousand one hundred forty-two
- Ordinal
- 47142nd
- Binary
- 1011100000100110
- Octal
- 134046
- Hexadecimal
- 0xB826
- Base64
- uCY=
- One's complement
- 18,393 (16-bit)
- Scientific notation
- 4.7142 × 10⁴
- As a duration
- 47,142 s = 13 hours, 5 minutes, 42 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵μζρμβʹ
- Mayan (base 20)
- 𝋥·𝋱·𝋱·𝋢
- Chinese
- 四萬七千一百四十二
- Chinese (financial)
- 肆萬柒仟壹佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 47,142 = 3
- e — Euler's number (e)
- Digit 47,142 = 8
- φ — Golden ratio (φ)
- Digit 47,142 = 4
- √2 — Pythagoras's (√2)
- Digit 47,142 = 3
- ln 2 — Natural log of 2
- Digit 47,142 = 6
- γ — Euler-Mascheroni (γ)
- Digit 47,142 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 47142, here are decompositions:
- 5 + 47137 = 47142
- 13 + 47129 = 47142
- 19 + 47123 = 47142
- 23 + 47119 = 47142
- 31 + 47111 = 47142
- 83 + 47059 = 47142
- 101 + 47041 = 47142
- 149 + 46993 = 47142
Showing the first eight; more decompositions exist.
UTF-8 encoding: EB A0 A6 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.184.38.
- Address
- 0.0.184.38
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.184.38
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 47142 first appears in π at position 409,910 of the decimal expansion (the 409,910ordinal-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°.