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42,168

42,168 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.).
Abundant Number Harshad / Niven

Properties

Parity
Even
Digit count
5
Digit sum
21
Digital root
3
Palindrome
No
Divisor count
32
σ(n) — sum of divisors
120,960

Primality

Prime factorization: 2 3 × 3 × 7 × 251

Divisors & multiples

All divisors (32)
1 · 2 · 3 · 4 · 6 · 7 · 8 · 12 · 14 · 21 · 24 · 28 · 42 · 56 · 84 · 168 · 251 · 502 · 753 · 1004 · 1506 · 1757 · 2008 · 3012 · 3514 · 5271 · 6024 · 7028 · 10542 · 14056 · 21084 · 42168
Aliquot sum (sum of proper divisors): 78,792
Factor pairs (a × b = 42,168)
1 × 42168
2 × 21084
3 × 14056
4 × 10542
6 × 7028
7 × 6024
8 × 5271
12 × 3514
14 × 3012
21 × 2008
24 × 1757
28 × 1506
42 × 1004
56 × 753
84 × 502
168 × 251
First multiples
42,168 · 84,336 · 126,504 · 168,672 · 210,840 · 253,008 · 295,176 · 337,344 · 379,512 · 421,680

Representations

In words
forty-two thousand one hundred sixty-eight
Ordinal
42168th
Binary
1010010010111000
Octal
122270
Hexadecimal
A4B8

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42168, here are decompositions:

  • 11 + 42157 = 42168
  • 29 + 42139 = 42168
  • 37 + 42131 = 42168
  • 67 + 42101 = 42168
  • 79 + 42089 = 42168
  • 97 + 42071 = 42168
  • 107 + 42061 = 42168
  • 149 + 42019 = 42168

Showing the first eight; more decompositions exist.

Unicode codepoint
U+A4B8
Other symbol (So)

UTF-8 encoding: EA 92 B8 (3 bytes).

Hex color
#00A4B8
RGB(0, 164, 184)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.164.184.