12642938 has 32 divisors (see below), whose sum is σ = 24105600. Its totient is φ = 4829760.

The previous prime is 12642919. The next prime is 12642979. The reversal of 12642938 is 83924621.

12642938 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12642898 and 12642907.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7388 + ... + 8936.

It is an arithmetic number, because the mean of its divisors is an integer number (753300).

Almost surely, 2^12642938 is an apocalyptic number.

12642938 is a deficient number, since it is larger than the sum of its proper divisors (11462662).

12642938 is a wasteful number, since it uses less digits than its factorization.

12642938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622.

The product of its digits is 20736, while the sum is 35.

The square root of 12642938 is about 3555.6909314506. The cubic root of 12642938 is about 232.9607036457.

The spelling of 12642938 in words is "twelve million, six hundred forty-two thousand, nine hundred thirty-eight".