42,216
42,216 is a composite number, even.
42,216 (forty-two thousand two hundred sixteen) is an even 5-digit number. It is a composite number with 16 divisors, and factors as 2³ × 3 × 1,759. Its proper divisors sum to 63,384, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xA4E8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 15
- Digit product
- 96
- Digital root
- 6
- Palindrome
- No
- Bit width
- 16 bits
- Reversed
- 61,224
- Recamán's sequence
- a(151,191) = 42,216
- Square (n²)
- 1,782,190,656
- Cube (n³)
- 75,236,960,733,696
- Divisor count
- 16
- σ(n) — sum of divisors
- 105,600
- φ(n) — Euler's totient
- 14,064
- Sum of prime factors
- 1,768
Primality
Prime factorization: 2 3 × 3 × 1759
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√42,216 = [205; (2, 6, 1, 2, 2, 4, 4, 10, 27, 3, 2, 1, 3, 1, 1, 1, 2, 16, 17, 16, 2, 1, 1, 1, …)]
Period length 38 — the block in parentheses repeats forever.
Representations
- In words
- forty-two thousand two hundred sixteen
- Ordinal
- 42216th
- Binary
- 1010010011101000
- Octal
- 122350
- Hexadecimal
- 0xA4E8
- Base64
- pOg=
- One's complement
- 23,319 (16-bit)
- Scientific notation
- 4.2216 × 10⁴
- As a duration
- 42,216 s = 11 hours, 43 minutes, 36 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵μβσιϛʹ
- Mayan (base 20)
- 𝋥·𝋥·𝋪·𝋰
- Chinese
- 四萬二千二百一十六
- Chinese (financial)
- 肆萬貳仟貳佰壹拾陸
Digit at this position in famous constants
- π — Pi (π)
- Digit 42,216 = 6
- e — Euler's number (e)
- Digit 42,216 = 1
- φ — Golden ratio (φ)
- Digit 42,216 = 0
- √2 — Pythagoras's (√2)
- Digit 42,216 = 0
- ln 2 — Natural log of 2
- Digit 42,216 = 4
- γ — Euler-Mascheroni (γ)
- Digit 42,216 = 3
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42216, here are decompositions:
- 7 + 42209 = 42216
- 19 + 42197 = 42216
- 23 + 42193 = 42216
- 29 + 42187 = 42216
- 37 + 42179 = 42216
- 47 + 42169 = 42216
- 59 + 42157 = 42216
- 127 + 42089 = 42216
Showing the first eight; more decompositions exist.
UTF-8 encoding: EA 93 A8 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.164.232.
- Address
- 0.0.164.232
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.164.232
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 42216 first appears in π at position 73,368 of the decimal expansion (the 73,368ordinal-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°.