12942387 has 12 divisors (see below), whose sum is σ = 18793944. Its totient is φ = 8582400.

The previous prime is 12942379. The next prime is 12942403. The reversal of 12942387 is 78324921.

12942387 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12942387 - 2³ = 12942379 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (12942337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1989 + ... + 5462.

It is an arithmetic number, because the mean of its divisors is an integer number (1566162).

Almost surely, 2^12942387 is an apocalyptic number.

12942387 is a deficient number, since it is larger than the sum of its proper divisors (5851557).

12942387 is a wasteful number, since it uses less digits than its factorization.

12942387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7650 (or 7647 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 12942387 is about 3597.5529183043. The cubic root of 12942387 is about 234.7856019524.

The spelling of 12942387 in words is "twelve million, nine hundred forty-two thousand, three hundred eighty-seven".