Live analysis

42,720

42,720 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: 15
Digital root: 6
Palindrome: No
Divisor count: 48
σ(n) — sum of divisors: 136,080

Primality

Prime factorization: 2 ⁵ × 3 × 5 × 89

Divisors & multiples

All divisors (48)

1 · 2 · 3 · 4 · 5 · 6 · 8 · 10 · 12 · 15 · 16 · 20 · 24 · 30 · 32 · 40 · 48 · 60 · 80 · 89 · 96 · 120 · 160 · 178 · 240 · 267 · 356 · 445 · 480 · 534 · 712 · 890 · 1068 · 1335 · 1424 · 1780 · 2136 · 2670 · 2848 · 3560 · 4272 · 5340 · 7120 · 8544 · 10680 · 14240 · 21360 · 42720

Aliquot sum (sum of proper divisors): 93,360

Factor pairs (a × b = 42,720)

1 × 42720

2 × 21360

3 × 14240

4 × 10680

5 × 8544

6 × 7120

8 × 5340

10 × 4272

12 × 3560

15 × 2848

16 × 2670

20 × 2136

24 × 1780

30 × 1424

32 × 1335

40 × 1068

48 × 890

60 × 712

80 × 534

89 × 480

96 × 445

120 × 356

160 × 267

178 × 240

First multiples

42,720 · 85,440 · 128,160 · 170,880 · 213,600 · 256,320 · 299,040 · 341,760 · 384,480 · 427,200

Representations

In words: forty-two thousand seven hundred twenty
Ordinal: 42720th
Binary: 1010011011100000
Octal: 123340
Hexadecimal: A6E0

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 42720, here are decompositions:

11 + 42709 = 42720
17 + 42703 = 42720
19 + 42701 = 42720
23 + 42697 = 42720
31 + 42689 = 42720
37 + 42683 = 42720
43 + 42677 = 42720
53 + 42667 = 42720

Showing the first eight; more decompositions exist.

Unicode codepoint

ꛠ

U+A6E0

Other letter (Lo)

UTF-8 encoding: EA 9B A0 (3 bytes).

Lookup U+A6E0 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#00A6E0

RGB(0, 166, 224)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.166.224.