42,018
42,018 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 81,024
- Recamán's sequence
- a(151,587) = 42,018
- Square (n²)
- 1,765,512,324
- Cube (n³)
- 74,183,296,829,832
- Divisor count
- 16
- σ(n) — sum of divisors
- 86,400
- φ(n) — Euler's totient
- 13,616
- Sum of prime factors
- 201
Primality
Prime factorization: 2 × 3 × 47 × 149
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand eighteen
- Ordinal
- 42018th
- Binary
- 1010010000100010
- Octal
- 122042
- Hexadecimal
- 0xA422
- Base64
- pCI=
- One's complement
- 23,517 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵μβιηʹ
- Mayan (base 20)
- 𝋥·𝋥·𝋠·𝋲
- Chinese
- 四萬二千零一十八
- Chinese (financial)
- 肆萬貳仟零壹拾捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,018 = 7
- e — Euler's number (e)
- Digit 42,018 = 9
- φ — Golden ratio (φ)
- Digit 42,018 = 0
- √2 — Pythagoras's (√2)
- Digit 42,018 = 0
- ln 2 — Natural log of 2
- Digit 42,018 = 5
- γ — Euler-Mascheroni (γ)
- Digit 42,018 = 2
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42018, here are decompositions:
- 5 + 42013 = 42018
- 19 + 41999 = 42018
- 37 + 41981 = 42018
- 59 + 41959 = 42018
- 61 + 41957 = 42018
- 71 + 41947 = 42018
- 107 + 41911 = 42018
- 131 + 41887 = 42018
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 90 A2 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.164.34.
- Address
- 0.0.164.34
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.164.34
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42018 first appears in π at position 30,626 of the decimal expansion (the 30,626ordinal-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.