Number
1,842
1,842 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 15
- Digital root
- 6
- Palindrome
- No
- Divisor count
- 8
- σ(n) — sum of divisors
- 3,696
Primality
Prime factorization: 2 × 3 × 307
Divisors & multiples
Aliquot sum (sum of proper divisors):
1,854
First multiples
Representations
- In words
- one thousand eight hundred forty-two
- Ordinal
- 1842nd
- Roman numeral
- MDCCCXLII
- Binary
- 11100110010
- Octal
- 3462
- Hexadecimal
- 732
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1842, here are decompositions:
- 11 + 1831 = 1842
- 19 + 1823 = 1842
- 31 + 1811 = 1842
- 41 + 1801 = 1842
- 53 + 1789 = 1842
- 59 + 1783 = 1842
- 83 + 1759 = 1842
- 89 + 1753 = 1842
Showing the first eight; more decompositions exist.
Unicode codepoint
ܲ
U+0732
Non-spacing mark (Mn)
UTF-8 encoding: DC B2 (2 bytes).
Hex color
#000732
RGB(0, 7, 50)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.7.50.