18,042
18,042 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 24,081
- Recamán's sequence
- a(15,972) = 18,042
- Square (n²)
- 325,513,764
- Cube (n³)
- 5,872,919,330,088
- Divisor count
- 16
- σ(n) — sum of divisors
- 37,632
- φ(n) — Euler's totient
- 5,760
- Sum of prime factors
- 133
Primality
Prime factorization: 2 × 3 × 31 × 97
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- eighteen thousand forty-two
- Ordinal
- 18042nd
- Binary
- 100011001111010
- Octal
- 43172
- Hexadecimal
- 0x467A
- Base64
- Rno=
- One's complement
- 47,493 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 · 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ιημβʹ
- Mayan (base 20)
- 𝋢·𝋥·𝋢·𝋢
- Chinese
- 一萬八千零四十二
- Chinese (financial)
- 壹萬捌仟零肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 18,042 = 5
- e — Euler's number (e)
- Digit 18,042 = 5
- φ — Golden ratio (φ)
- Digit 18,042 = 6
- √2 — Pythagoras's (√2)
- Digit 18,042 = 5
- ln 2 — Natural log of 2
- Digit 18,042 = 4
- γ — Euler-Mascheroni (γ)
- Digit 18,042 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 18042, here are decompositions:
- 29 + 18013 = 18042
- 53 + 17989 = 18042
- 61 + 17981 = 18042
- 71 + 17971 = 18042
- 83 + 17959 = 18042
- 103 + 17939 = 18042
- 113 + 17929 = 18042
- 131 + 17911 = 18042
Showing the first eight; more decompositions exist.
UTF-8 encoding: E4 99 BA (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.70.122.
- Address
- 0.0.70.122
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.70.122
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 18042 first appears in π at position 80,213 of the decimal expansion (the 80,213ordinal-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.