42,040
42,040 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 10
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 4,024
- Recamán's sequence
- a(151,543) = 42,040
- Square (n²)
- 1,767,361,600
- Cube (n³)
- 74,299,881,664,000
- Divisor count
- 16
- σ(n) — sum of divisors
- 94,680
- φ(n) — Euler's totient
- 16,800
- Sum of prime factors
- 1,062
Primality
Prime factorization: 2 3 × 5 × 1051
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand forty
- Ordinal
- 42040th
- Binary
- 1010010000111000
- Octal
- 122070
- Hexadecimal
- 0xA438
- Base64
- pDg=
- One's complement
- 23,495 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵μβμʹ
- Mayan (base 20)
- 𝋥·𝋥·𝋢·𝋠
- Chinese
- 四萬二千零四十
- Chinese (financial)
- 肆萬貳仟零肆拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,040 = 7
- e — Euler's number (e)
- Digit 42,040 = 9
- φ — Golden ratio (φ)
- Digit 42,040 = 0
- √2 — Pythagoras's (√2)
- Digit 42,040 = 6
- ln 2 — Natural log of 2
- Digit 42,040 = 3
- γ — Euler-Mascheroni (γ)
- Digit 42,040 = 1
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42040, here are decompositions:
- 17 + 42023 = 42040
- 23 + 42017 = 42040
- 41 + 41999 = 42040
- 59 + 41981 = 42040
- 71 + 41969 = 42040
- 83 + 41957 = 42040
- 113 + 41927 = 42040
- 137 + 41903 = 42040
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 90 B8 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.164.56.
- Address
- 0.0.164.56
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.164.56
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42040 first appears in π at position 17,676 of the decimal expansion (the 17,676ordinal-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.