12855242 has 12 divisors (see below), whose sum is σ = 19497366. Its totient is φ = 6356880.

The previous prime is 12855239. The next prime is 12855251. The reversal of 12855242 is 24255821.

It can be written as a sum of positive squares in 3 ways, for example, as 12117361 + 737881 = 3481^2 + 859^2 .

It is an unprimeable number.

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, 23492 + ... + 24032.

Almost surely, 2^12855242 is an apocalyptic number.

12855242 is a deficient number, since it is larger than the sum of its proper divisors (6642124).

12855242 is an equidigital number, since it uses as much as digits as its factorization.

12855242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 761 (or 652 counting only the distinct ones).

The product of its digits is 6400, while the sum is 29.

The square root of 12855242 is about 3585.4207563409. The cubic root of 12855242 is about 234.2574539933.

The spelling of 12855242 in words is "twelve million, eight hundred fifty-five thousand, two hundred forty-two".