2,942
2,942 is a composite number, even.
2,942 (two thousand nine hundred forty-two) is an even 4-digit number. It is a composite number with 4 divisors, and factors as 2 × 1,471. Written other ways, in Roman numerals it is MMCMXLII and in binary, 101101111110.
Interestingness
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 17
- Digit product
- 144
- Digital root
- 8
- Palindrome
- No
- Bit width
- 12 bits
- Reversed
- 2,492
- Recamán's sequence
- a(1,291) = 2,942
- Square (n²)
- 8,655,364
- Cube (n³)
- 25,464,080,888
- Divisor count
- 4
- σ(n) — sum of divisors
- 4,416
- φ(n) — Euler's totient
- 1,470
- Sum of prime factors
- 1,473
Primality
Prime factorization: 2 × 1471
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√2,942 = [54; (4, 6, 7, 1, 1, 2, 3, 9, 1, 1, 3, 4, 1, 1, 1, 5, 15, 3, 8, 54, 8, 3, 15, 5, …)]
Period length 40 — the block in parentheses repeats forever.
Representations
- In words
- two thousand nine hundred forty-two
- Ordinal
- 2942nd
- Roman numeral
- MMCMXLII
- Binary
- 101101111110
- Octal
- 5576
- Hexadecimal
- 0xB7E
- Base64
- C34=
- One's complement
- 62,593 (16-bit)
- Scientific notation
- 2.942 × 10³
- As a duration
- 2,942 s = 49 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵βϡμβʹ
- Mayan (base 20)
- 𝋧·𝋧·𝋢
- Chinese
- 二千九百四十二
- Chinese (financial)
- 貳仟玖佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 2,942 = 7
- e — Euler's number (e)
- Digit 2,942 = 6
- φ — Golden ratio (φ)
- Digit 2,942 = 7
- √2 — Pythagoras's (√2)
- Digit 2,942 = 7
- ln 2 — Natural log of 2
- Digit 2,942 = 7
- γ — Euler-Mascheroni (γ)
- Digit 2,942 = 2
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 2942, here are decompositions:
- 3 + 2939 = 2942
- 109 + 2833 = 2942
- 139 + 2803 = 2942
- 151 + 2791 = 2942
- 193 + 2749 = 2942
- 211 + 2731 = 2942
- 223 + 2719 = 2942
- 229 + 2713 = 2942
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.11.126.
- Address
- 0.0.11.126
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.11.126
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 2,942 Hz is closest to:
- Concert pitch (A4 = 440 Hz): F♯7 (2960 Hz, -11¢)
- Scientific pitch (C4 = 256 Hz): F♯7 (2896.3 Hz, +27¢)
- Baroque pitch (A4 = 415 Hz): G7 (2957.8 Hz, -9¢)
The digit sequence 2942 first appears in π at position 9,567 of the decimal expansion (the 9,567ordinal-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.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.