4,242
4,242 is a composite number, even.
4,242 (four thousand two hundred forty-two) is an even 4-digit number. It is a composite number with 16 divisors, and factors as 2 × 3 × 7 × 101. Its proper divisors sum to 5,550, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1092.
Interestingness
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 12
- Digit product
- 64
- Digital root
- 3
- Palindrome
- No
- Bit width
- 13 bits
- Reversed
- 2,424
- Recamán's sequence
- a(54,603) = 4,242
- Square (n²)
- 17,994,564
- Cube (n³)
- 76,332,940,488
- Divisor count
- 16
- σ(n) — sum of divisors
- 9,792
- φ(n) — Euler's totient
- 1,200
- Sum of prime factors
- 113
Primality
Prime factorization: 2 × 3 × 7 × 101
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√4,242 = [65; (7, 1, 1, 1, 8, 1, 1, 1, 7, 130)]
Period length 10 — the block in parentheses repeats forever.
Representations
- In words
- four thousand two hundred forty-two
- Ordinal
- 4242nd
- Binary
- 1000010010010
- Octal
- 10222
- Hexadecimal
- 0x1092
- Base64
- EJI=
- One's complement
- 61,293 (16-bit)
- Scientific notation
- 4.242 × 10³
- As a duration
- 4,242 s = 1 hour, 10 minutes, 42 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹 𒌋 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓆼𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵δσμβʹ
- Mayan (base 20)
- 𝋪·𝋬·𝋢
- Chinese
- 四千二百四十二
- Chinese (financial)
- 肆仟貳佰肆拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 4,242 = 9
- e — Euler's number (e)
- Digit 4,242 = 5
- φ — Golden ratio (φ)
- Digit 4,242 = 1
- √2 — Pythagoras's (√2)
- Digit 4,242 = 2
- ln 2 — Natural log of 2
- Digit 4,242 = 1
- γ — Euler-Mascheroni (γ)
- Digit 4,242 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 4242, here are decompositions:
- 11 + 4231 = 4242
- 13 + 4229 = 4242
- 23 + 4219 = 4242
- 31 + 4211 = 4242
- 41 + 4201 = 4242
- 83 + 4159 = 4242
- 89 + 4153 = 4242
- 103 + 4139 = 4242
Showing the first eight; more decompositions exist.
UTF-8 encoding: E1 82 92 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.16.146.
- Address
- 0.0.16.146
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.16.146
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 4,242 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C8 (4186 Hz, +23¢)
- Scientific pitch (C4 = 256 Hz): C♯8 (4339.6 Hz, -39¢)
- Baroque pitch (A4 = 415 Hz): C♯8 (4182.9 Hz, +24¢)
The digit sequence 4242 first appears in π at position 6,226 of the decimal expansion (the 6,226ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.