42,399
42,399 is a composite number, odd.
42,399 (forty-two thousand three hundred ninety-nine) is an odd 5-digit number. It is a composite number with 12 divisors, and factors as 3² × 7 × 673. Written other ways, in hexadecimal, 0xA59F.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 5
- Digit sum
- 27
- Digit product
- 1,944
- Digital root
- 9
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 99,324
- Recamán's sequence
- a(150,825) = 42,399
- Square (n²)
- 1,797,675,201
- Cube (n³)
- 76,219,630,847,199
- Divisor count
- 12
- σ(n) — sum of divisors
- 70,096
- φ(n) — Euler's totient
- 24,192
- Sum of prime factors
- 686
Primality
Prime factorization: 3 2 × 7 × 673
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√42,399 = [205; (1, 10, 7, 1, 1, 6, 1, 1, 3, 4, 1, 4, 29, 4, 1, 4, 3, 1, 1, 6, 1, 1, 7, 10, …)]
Period length 26 — the block in parentheses repeats forever.
Representations
- In words
- forty-two thousand three hundred ninety-nine
- Ordinal
- 42399th
- Binary
- 1010010110011111
- Octal
- 122637
- Hexadecimal
- 0xA59F
- Base64
- pZ8=
- One's complement
- 23,136 (16-bit)
- Scientific notation
- 4.2399 × 10⁴
- As a duration
- 42,399 s = 11 hours, 46 minutes, 39 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵μβτϟθʹ
- Mayan (base 20)
- 𝋥·𝋥·𝋳·𝋳
- Chinese
- 四萬二千三百九十九
- Chinese (financial)
- 肆萬貳仟參佰玖拾玖
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,399 = 7
- e — Euler's number (e)
- Digit 42,399 = 5
- φ — Golden ratio (φ)
- Digit 42,399 = 7
- √2 — Pythagoras's (√2)
- Digit 42,399 = 8
- ln 2 — Natural log of 2
- Digit 42,399 = 9
- γ — Euler-Mascheroni (γ)
- Digit 42,399 = 4
Also seen as
UTF-8 encoding: EA 96 9F (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.165.159.
- Address
- 0.0.165.159
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.165.159
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42399 first appears in π at position 7,661 of the decimal expansion (the 7,661ordinal-suffix:st 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°.