12775842 has 12 divisors (see below), whose sum is σ = 27681030. Its totient is φ = 4258608.

The previous prime is 12775831. The next prime is 12775849. The reversal of 12775842 is 24857721.

12775842 is a `hidden beast` number, since 1 + 2 + 77 + 584 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8071281 + 4704561 = 2841^2 + 2169^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12775797 and 12775806.

It is not an unprimeable number, because it can be changed into a prime (12775849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 354867 + ... + 354902.

Almost surely, 2^12775842 is an apocalyptic number.

12775842 is an abundant number, since it is smaller than the sum of its proper divisors (14905188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12775842 is a wasteful number, since it uses less digits than its factorization.

12775842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709777 (or 709774 counting only the distinct ones).

The product of its digits is 31360, while the sum is 36.

The square root of 12775842 is about 3574.3309863526. The cubic root of 12775842 is about 233.7741630011.

The spelling of 12775842 in words is "twelve million, seven hundred seventy-five thousand, eight hundred forty-two".