8,042
8,042 is a composite number, even.
8,042 (eight thousand forty-two) is an even 4-digit number. It is a composite number with 4 divisors, and factors as 2 × 4,021. Written other ways, in hexadecimal, 0x1F6A.
Interestingness
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 14
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 13 bits
- Reversed
- 2,408
- Recamán's sequence
- a(25,512) = 8,042
- Square (n²)
- 64,673,764
- Cube (n³)
- 520,106,410,088
- Divisor count
- 4
- σ(n) — sum of divisors
- 12,066
- φ(n) — Euler's totient
- 4,020
- Sum of prime factors
- 4,023
Primality
Prime factorization: 2 × 4021
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√8,042 = [89; (1, 2, 10, 4, 1, 1, 1, 1, 1, 7, 1, 1, 7, 1, 1, 1, 1, 1, 4, 10, 2, 1, 178)]
Period length 23 — the block in parentheses repeats forever.
Representations
- In words
- eight thousand forty-two
- Ordinal
- 8042nd
- Binary
- 1111101101010
- Octal
- 17552
- Hexadecimal
- 0x1F6A
- Base64
- H2o=
- One's complement
- 57,493 (16-bit)
- Scientific notation
- 8.042 × 10³
- As a duration
- 8,042 s = 2 hours, 14 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ημβʹ
- Mayan (base 20)
- 𝋡·𝋠·𝋢·𝋢
- Chinese
- 八千零四十二
- Chinese (financial)
- 捌仟零肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 8,042 = 0
- e — Euler's number (e)
- Digit 8,042 = 0
- φ — Golden ratio (φ)
- Digit 8,042 = 5
- √2 — Pythagoras's (√2)
- Digit 8,042 = 1
- ln 2 — Natural log of 2
- Digit 8,042 = 3
- γ — Euler-Mascheroni (γ)
- Digit 8,042 = 1
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 8042, here are decompositions:
- 3 + 8039 = 8042
- 31 + 8011 = 8042
- 79 + 7963 = 8042
- 109 + 7933 = 8042
- 163 + 7879 = 8042
- 283 + 7759 = 8042
- 373 + 7669 = 8042
- 421 + 7621 = 8042
Showing the first eight; more decompositions exist.
UTF-8 encoding: E1 BD AA (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.31.106.
- Address
- 0.0.31.106
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.31.106
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 8,042 Hz is closest to:
- Concert pitch (A4 = 440 Hz): B8 (7902.1 Hz, +30¢)
- Scientific pitch (C4 = 256 Hz): C9 (8192 Hz, -32¢)
- Baroque pitch (A4 = 415 Hz): C9 (7896.3 Hz, +32¢)
The digit sequence 8042 first appears in π at position 18,182 of the decimal expansion (the 18,182ordinal-suffix:nd 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.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.