6,442
6,442 is a composite number, even.
6,442 (six thousand four hundred forty-two) is an even 4-digit number. It is a composite number with 4 divisors, and factors as 2 × 3,221. Written other ways, in hexadecimal, 0x192A.
Interestingness
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 16
- Digit product
- 192
- Digital root
- 7
- Palindrome
- No
- Bit width
- 13 bits
- Reversed
- 2,446
- Recamán's sequence
- a(27,016) = 6,442
- Square (n²)
- 41,499,364
- Cube (n³)
- 267,338,902,888
- Divisor count
- 4
- σ(n) — sum of divisors
- 9,666
- φ(n) — Euler's totient
- 3,220
- Sum of prime factors
- 3,223
Primality
Prime factorization: 2 × 3221
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√6,442 = [80; (3, 1, 4, 2, 2, 1, 26, 22, 1, 8, 2, 17, 2, 1, 3, 6, 1, 2, 2, 2, 2, 1, 1, 3, …)]
Period length 57 — the block in parentheses repeats forever.
Representations
- In words
- six thousand four hundred forty-two
- Ordinal
- 6442nd
- Binary
- 1100100101010
- Octal
- 14452
- Hexadecimal
- 0x192A
- Base64
- GSo=
- One's complement
- 59,093 (16-bit)
- Scientific notation
- 6.442 × 10³
- As a duration
- 6,442 s = 1 hour, 47 minutes, 22 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ϛυμβʹ
- Mayan (base 20)
- 𝋰·𝋢·𝋢
- Chinese
- 六千四百四十二
- Chinese (financial)
- 陸仟肆佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 6,442 = 3
- e — Euler's number (e)
- Digit 6,442 = 3
- φ — Golden ratio (φ)
- Digit 6,442 = 5
- √2 — Pythagoras's (√2)
- Digit 6,442 = 7
- ln 2 — Natural log of 2
- Digit 6,442 = 3
- γ — Euler-Mascheroni (γ)
- Digit 6,442 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 6442, here are decompositions:
- 53 + 6389 = 6442
- 83 + 6359 = 6442
- 89 + 6353 = 6442
- 113 + 6329 = 6442
- 131 + 6311 = 6442
- 173 + 6269 = 6442
- 179 + 6263 = 6442
- 239 + 6203 = 6442
Showing the first eight; more decompositions exist.
UTF-8 encoding: E1 A4 AA (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.25.42.
- Address
- 0.0.25.42
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.25.42
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 6,442 Hz is closest to:
- Concert pitch (A4 = 440 Hz): G8 (6271.9 Hz, +46¢ — about midway to G♯8)
- Scientific pitch (C4 = 256 Hz): G♯8 (6502 Hz, -16¢)
- Baroque pitch (A4 = 415 Hz): G♯8 (6267.3 Hz, +48¢ — about midway to A8)
The digit sequence 6442 first appears in π at position 200 of the decimal expansion (the 200ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.