64,842
64,842 is a composite number, even.
64,842 (sixty-four thousand eight hundred forty-two) is an even 5-digit number. It is a composite number with 16 divisors, and factors as 2 × 3 × 101 × 107. Its proper divisors sum to 67,350, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xFD4A.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 24
- Digit product
- 1,536
- Digital root
- 6
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 24,846
- Recamán's sequence
- a(135,167) = 64,842
- Square (n²)
- 4,204,484,964
- Cube (n³)
- 272,627,214,035,688
- Divisor count
- 16
- σ(n) — sum of divisors
- 132,192
- φ(n) — Euler's totient
- 21,200
- Sum of prime factors
- 213
Primality
Prime factorization: 2 × 3 × 101 × 107
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√64,842 = [254; (1, 1, 1, 3, 1, 1, 1, 5, 1, 4, 6, 1, 29, 10, 2, 1, 3, 2, 84, 2, 3, 1, 2, 10, …)]
Period length 38 — the block in parentheses repeats forever.
Representations
- In words
- sixty-four thousand eight hundred forty-two
- Ordinal
- 64842nd
- Binary
- 1111110101001010
- Octal
- 176512
- Hexadecimal
- 0xFD4A
- Base64
- /Uo=
- One's complement
- 693 (16-bit)
- Scientific notation
- 6.4842 × 10⁴
- As a duration
- 64,842 s = 18 hours, 42 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 · 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ξδωμβʹ
- Mayan (base 20)
- 𝋨·𝋢·𝋢·𝋢
- Chinese
- 六萬四千八百四十二
- Chinese (financial)
- 陸萬肆仟捌佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 64,842 = 6
- e — Euler's number (e)
- Digit 64,842 = 2
- φ — Golden ratio (φ)
- Digit 64,842 = 7
- √2 — Pythagoras's (√2)
- Digit 64,842 = 1
- ln 2 — Natural log of 2
- Digit 64,842 = 6
- γ — Euler-Mascheroni (γ)
- Digit 64,842 = 7
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 64842, here are decompositions:
- 31 + 64811 = 64842
- 59 + 64783 = 64842
- 61 + 64781 = 64842
- 79 + 64763 = 64842
- 149 + 64693 = 64842
- 163 + 64679 = 64842
- 179 + 64663 = 64842
- 181 + 64661 = 64842
Showing the first eight; more decompositions exist.
UTF-8 encoding: EF B5 8A (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.253.74.
- Address
- 0.0.253.74
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.253.74
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 64842 first appears in π at position 27,507 of the decimal expansion (the 27,507ordinal-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°.