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42,568

42,568 is a composite number, even.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).
Deficient Number Evil Number Recamán's Sequence

Properties

Parity
Even
Digit count
5
Digit sum
25
Digit product
1,920
Digital root
7
Palindrome
No
Bit width
16 bits
Reversed
86,524
Recamán's sequence
a(12,004) = 42,568
Square (n²)
1,812,034,624
Cube (n³)
77,134,689,874,432
Divisor count
16
σ(n) — sum of divisors
84,780
φ(n) — Euler's totient
19,968
Sum of prime factors
336

Primality

Prime factorization: 2 3 × 17 × 313

Nearest primes: 42,557 (−11) · 42,569 (+1)

Divisors & multiples

All divisors (16)
1 · 2 · 4 · 8 · 17 · 34 · 68 · 136 · 313 · 626 · 1252 · 2504 · 5321 · 10642 · 21284 (half) · 42568
Aliquot sum (sum of proper divisors): 42,212
Factor pairs (a × b = 42,568)
1 × 42568
2 × 21284
4 × 10642
8 × 5321
17 × 2504
34 × 1252
68 × 626
136 × 313
First multiples
42,568 · 85,136 (double) · 127,704 · 170,272 · 212,840 · 255,408 · 297,976 · 340,544 · 383,112 · 425,680

Sums & aliquot sequence

As a sum of two squares: 42² + 202² = 58² + 198²
As consecutive integers: 2,653 + 2,654 + … + 2,668 2,496 + 2,497 + … + 2,512 21 + 22 + … + 292
Aliquot sequence: 42,568 42,212 33,304 32,216 28,204 25,724 20,476 15,364 12,860 14,188 10,648 11,312 13,984 16,256 16,384 16,383 6,145 — unresolved within range

Representations

In words
forty-two thousand five hundred sixty-eight
Ordinal
42568th
Binary
1010011001001000
Octal
123110
Hexadecimal
0xA648
Base64
pkg=
One's complement
22,967 (16-bit)
In other bases
ternary (3) 2011101121
quaternary (4) 22121020
quinary (5) 2330233
senary (6) 525024
septenary (7) 235051
nonary (9) 64347
undecimal (11) 29a89
duodecimal (12) 20774
tridecimal (13) 164b6
tetradecimal (14) 11728
pentadecimal (15) c92d

Historical numeral systems

Babylonian (base 60)
𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
Egyptian hieroglyphic
𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
Greek (Milesian)
͵μβφξηʹ
Mayan (base 20)
𝋥·𝋦·𝋨·𝋨
Chinese
四萬二千五百六十八
Chinese (financial)
肆萬貳仟伍佰陸拾捌
In other modern scripts
Eastern Arabic ٤٢٥٦٨ Devanagari ४२५६८ Bengali ৪২৫৬৮ Tamil ௪௨௫௬௮ Thai ๔๒๕๖๘ Tibetan ༤༢༥༦༨ Khmer ៤២៥៦៨ Lao ໔໒໕໖໘ Burmese ၄၂၅၆၈

Digit at this position in famous constants

π — Pi (π)
Digit 42,568 = 3
e — Euler's number (e)
Digit 42,568 = 5
φ — Golden ratio (φ)
Digit 42,568 = 6
√2 — Pythagoras's (√2)
Digit 42,568 = 0
ln 2 — Natural log of 2
Digit 42,568 = 4
γ — Euler-Mascheroni (γ)
Digit 42,568 = 5

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42568, here are decompositions:

  • 11 + 42557 = 42568
  • 59 + 42509 = 42568
  • 101 + 42467 = 42568
  • 107 + 42461 = 42568
  • 131 + 42437 = 42568
  • 269 + 42299 = 42568
  • 311 + 42257 = 42568
  • 347 + 42221 = 42568

Showing the first eight; more decompositions exist.

Unicode codepoint
Cyrillic Capital Letter Djerv
U+A648
Uppercase letter (Lu)

UTF-8 encoding: EA 99 88 (3 bytes).

Hex color
#00A648
RGB(0, 166, 72)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.166.72.

Address
0.0.166.72
Class
reserved
IPv4-mapped IPv6
::ffff:0.0.166.72

Unspecified address (0.0.0.0/8) — "this network" placeholder.

Position in π

The digit sequence 42568 first appears in π at position 1,749 of the decimal expansion (the 1,749ordinal-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.