3,942
3,942 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 18
- Digit product
- 216
- Digital root
- 9
- Palindrome
- No
- Bit width
- 12 bits
- Reversed
- 2,493
- Recamán's sequence
- a(14,507) = 3,942
- Square (n²)
- 15,539,364
- Cube (n³)
- 61,256,172,888
- Divisor count
- 16
- σ(n) — sum of divisors
- 8,880
- φ(n) — Euler's totient
- 1,296
- Sum of prime factors
- 84
Primality
Prime factorization: 2 × 3 3 × 73
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- three thousand nine hundred forty-two
- Ordinal
- 3942nd
- Roman numeral
- MMMCMXLII
- Binary
- 111101100110
- Octal
- 7546
- Hexadecimal
- 0xF66
- Base64
- D2Y=
- One's complement
- 61,593 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹 𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵γϡμβʹ
- Mayan (base 20)
- 𝋩·𝋱·𝋢
- Chinese
- 三千九百四十二
- Chinese (financial)
- 參仟玖佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 3,942 = 7
- e — Euler's number (e)
- Digit 3,942 = 5
- φ — Golden ratio (φ)
- Digit 3,942 = 6
- √2 — Pythagoras's (√2)
- Digit 3,942 = 7
- ln 2 — Natural log of 2
- Digit 3,942 = 0
- γ — Euler-Mascheroni (γ)
- Digit 3,942 = 7
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 3942, here are decompositions:
- 11 + 3931 = 3942
- 13 + 3929 = 3942
- 19 + 3923 = 3942
- 23 + 3919 = 3942
- 31 + 3911 = 3942
- 53 + 3889 = 3942
- 61 + 3881 = 3942
- 79 + 3863 = 3942
Showing the first eight; more decompositions exist.
UTF-8 encoding: E0 BD A6 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.15.102.
- Address
- 0.0.15.102
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.15.102
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.
The digit sequence 3942 first appears in π at position 9,141 of the decimal expansion (the 9,141ordinal-suffix:st 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.