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102,240

102,240 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 Recamán's Sequence

Properties

Parity
Even
Digit count
6
Digit sum
9
Digital root
9
Palindrome
No
Reversed
42,201
Recamán's sequence
a(40,207) = 102,240
Divisor count
72
σ(n) — sum of divisors
353,808

Primality

Prime factorization: 2 5 × 3 2 × 5 × 71

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 · 71 · 72 · 80 · 90 · 96 · 120 · 142 · 144 · 160 · 180 · 213 · 240 · 284 · 288 · 355 · 360 · 426 · 480 · 568 · 639 · 710 · 720 · 852 · 1065 · 1136 · 1278 · 1420 · 1440 · 1704 · 2130 · 2272 · 2556 · 2840 · 3195 · 3408 · 4260 · 5112 · 5680 · 6390 · 6816 · 8520 · 10224 · 11360 · 12780 · 17040 · 20448 · 25560 · 34080 · 51120 · 102240
Aliquot sum (sum of proper divisors): 251,568
Factor pairs (a × b = 102,240)
1 × 102240
2 × 51120
3 × 34080
4 × 25560
5 × 20448
6 × 17040
8 × 12780
9 × 11360
10 × 10224
12 × 8520
15 × 6816
16 × 6390
18 × 5680
20 × 5112
24 × 4260
30 × 3408
32 × 3195
36 × 2840
40 × 2556
45 × 2272
48 × 2130
60 × 1704
71 × 1440
72 × 1420
80 × 1278
90 × 1136
96 × 1065
120 × 852
142 × 720
144 × 710
160 × 639
180 × 568
213 × 480
240 × 426
284 × 360
288 × 355
First multiples
102,240 · 204,480 · 306,720 · 408,960 · 511,200 · 613,440 · 715,680 · 817,920 · 920,160 · 1,022,400

Representations

In words
one hundred two thousand two hundred forty
Ordinal
102240th
Binary
11000111101100000
Octal
307540
Hexadecimal
0x18F60
Base64
AY9g

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 102240, here are decompositions:

  • 7 + 102233 = 102240
  • 11 + 102229 = 102240
  • 23 + 102217 = 102240
  • 37 + 102203 = 102240
  • 41 + 102199 = 102240
  • 43 + 102197 = 102240
  • 59 + 102181 = 102240
  • 79 + 102161 = 102240

Showing the first eight; more decompositions exist.

Hex color
#018F60
RGB(1, 143, 96)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.1.143.96.

Address
0.1.143.96
Class
reserved
IPv4-mapped IPv6
::ffff:0.1.143.96

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 102,240 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 US102,240 on Google Patents ↗ Look up on USPTO ↗