42,740
42,740 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 17
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 4,724
- Recamán's sequence
- a(73,112) = 42,740
- Square (n²)
- 1,826,707,600
- Cube (n³)
- 78,073,482,824,000
- Divisor count
- 12
- σ(n) — sum of divisors
- 89,796
- φ(n) — Euler's totient
- 17,088
- Sum of prime factors
- 2,146
Primality
Prime factorization: 2 2 × 5 × 2137
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- forty-two thousand seven hundred forty
- Ordinal
- 42740th
- Binary
- 1010011011110100
- Octal
- 123364
- Hexadecimal
- 0xA6F4
- Base64
- pvQ=
- One's complement
- 22,795 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵μβψμʹ
- Mayan (base 20)
- 𝋥·𝋦·𝋱·𝋠
- Chinese
- 四萬二千七百四十
- Chinese (financial)
- 肆萬貳仟柒佰肆拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,740 = 2
- e — Euler's number (e)
- Digit 42,740 = 1
- φ — Golden ratio (φ)
- Digit 42,740 = 2
- √2 — Pythagoras's (√2)
- Digit 42,740 = 5
- ln 2 — Natural log of 2
- Digit 42,740 = 2
- γ — Euler-Mascheroni (γ)
- Digit 42,740 = 6
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42740, here are decompositions:
- 3 + 42737 = 42740
- 13 + 42727 = 42740
- 31 + 42709 = 42740
- 37 + 42703 = 42740
- 43 + 42697 = 42740
- 73 + 42667 = 42740
- 97 + 42643 = 42740
- 151 + 42589 = 42740
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 9B B4 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.166.244.
- Address
- 0.0.166.244
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.166.244
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42740 first appears in π at position 173,353 of the decimal expansion (the 173,353ordinal-suffix:rd 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.