number.wiki
Number

42,409

42,409 is a prime, odd.

Deficient Number Prime Sexy Prime Squarefree Twin Prime

Properties

Parity
Odd
Digit count
5
Digit sum
19
Digital root
1
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
42,410

Primality

42,409 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 42409
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 42,409)
1 × 42409
First multiples
42,409 · 84,818 · 127,227 · 169,636 · 212,045 · 254,454 · 296,863 · 339,272 · 381,681 · 424,090

Representations

In words
forty-two thousand four hundred nine
Ordinal
42409th
Binary
1010010110101001
Octal
122651
Hexadecimal
A5A9

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 42,407 (gap of 2)
  • Next prime: 42,433 (gap of 24)

Pair status: twin with 42407.

Unicode codepoint
U+A5A9
Other letter (Lo)

UTF-8 encoding: EA 96 A9 (3 bytes).

Hex color
#00A5A9
RGB(0, 165, 169)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.165.169.