20,442
20,442 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 12
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 24,402
- Recamán's sequence
- a(86,332) = 20,442
- Square (n²)
- 417,875,364
- Cube (n³)
- 8,542,208,190,888
- Divisor count
- 8
- σ(n) — sum of divisors
- 40,896
- φ(n) — Euler's totient
- 6,812
- Sum of prime factors
- 3,412
Primality
Prime factorization: 2 × 3 × 3407
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- twenty thousand four hundred forty-two
- Ordinal
- 20442nd
- Binary
- 100111111011010
- Octal
- 47732
- Hexadecimal
- 0x4FDA
- Base64
- T9o=
- One's complement
- 45,093 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵κυμβʹ
- Mayan (base 20)
- 𝋢·𝋫·𝋢·𝋢
- Chinese
- 二萬零四百四十二
- Chinese (financial)
- 貳萬零肆佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 20,442 = 8
- e — Euler's number (e)
- Digit 20,442 = 6
- φ — Golden ratio (φ)
- Digit 20,442 = 9
- √2 — Pythagoras's (√2)
- Digit 20,442 = 0
- ln 2 — Natural log of 2
- Digit 20,442 = 2
- γ — Euler-Mascheroni (γ)
- Digit 20,442 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 20442, here are decompositions:
- 11 + 20431 = 20442
- 31 + 20411 = 20442
- 43 + 20399 = 20442
- 53 + 20389 = 20442
- 73 + 20369 = 20442
- 83 + 20359 = 20442
- 89 + 20353 = 20442
- 101 + 20341 = 20442
Showing the first eight; more decompositions exist.
UTF-8 encoding: E4 BF 9A (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.79.218.
- Address
- 0.0.79.218
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.79.218
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 20442 first appears in π at position 131,890 of the decimal expansion (the 131,890ordinal-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.