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105,120

105,120 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 Happy Number Harshad / Niven Recamán's Sequence

Properties

Parity
Even
Digit count
6
Digit sum
9
Digital root
9
Palindrome
No
Reversed
21,501
Recamán's sequence
a(90,843) = 105,120
Divisor count
72
σ(n) — sum of divisors
363,636

Primality

Prime factorization: 2 5 × 3 2 × 5 × 73

Divisors & multiples

All divisors (72)
1 · 2 · 3 · 4 · 5 · 6 · 8 · 9 · 10 · 12 · 15 · 16 · 18 · 20 · 24 · 30 · 32 · 36 · 40 · 45 · 48 · 60 · 72 · 73 · 80 · 90 · 96 · 120 · 144 · 146 · 160 · 180 · 219 · 240 · 288 · 292 · 360 · 365 · 438 · 480 · 584 · 657 · 720 · 730 · 876 · 1095 · 1168 · 1314 · 1440 · 1460 · 1752 · 2190 · 2336 · 2628 · 2920 · 3285 · 3504 · 4380 · 5256 · 5840 · 6570 · 7008 · 8760 · 10512 · 11680 · 13140 · 17520 · 21024 · 26280 · 35040 · 52560 · 105120
Aliquot sum (sum of proper divisors): 258,516
Factor pairs (a × b = 105,120)
1 × 105120
2 × 52560
3 × 35040
4 × 26280
5 × 21024
6 × 17520
8 × 13140
9 × 11680
10 × 10512
12 × 8760
15 × 7008
16 × 6570
18 × 5840
20 × 5256
24 × 4380
30 × 3504
32 × 3285
36 × 2920
40 × 2628
45 × 2336
48 × 2190
60 × 1752
72 × 1460
73 × 1440
80 × 1314
90 × 1168
96 × 1095
120 × 876
144 × 730
146 × 720
160 × 657
180 × 584
219 × 480
240 × 438
288 × 365
292 × 360
First multiples
105,120 · 210,240 · 315,360 · 420,480 · 525,600 · 630,720 · 735,840 · 840,960 · 946,080 · 1,051,200

Representations

In words
one hundred five thousand one hundred twenty
Ordinal
105120th
Binary
11001101010100000
Octal
315240
Hexadecimal
0x19AA0
Base64
AZqg

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 105120, here are decompositions:

  • 13 + 105107 = 105120
  • 23 + 105097 = 105120
  • 83 + 105037 = 105120
  • 89 + 105031 = 105120
  • 97 + 105023 = 105120
  • 101 + 105019 = 105120
  • 149 + 104971 = 105120
  • 167 + 104953 = 105120

Showing the first eight; more decompositions exist.

Hex color
#019AA0
RGB(1, 154, 160)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.1.154.160.

Address
0.1.154.160
Class
reserved
IPv4-mapped IPv6
::ffff:0.1.154.160

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

Possible US patent number

This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 105,120 and was likely granted around 1870.

Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.

Look up US105,120 on Google Patents ↗ Look up on USPTO ↗