12979942 has 16 divisors (see below), whose sum is σ = 20684160. Its totient is φ = 6087808.

The previous prime is 12979931. The next prime is 12979961. The reversal of 12979942 is 24997921.

12979942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15888 + ... + 16684.

It is an arithmetic number, because the mean of its divisors is an integer number (1292760).

Almost surely, 2^12979942 is an apocalyptic number.

12979942 is a deficient number, since it is larger than the sum of its proper divisors (7704218).

12979942 is a wasteful number, since it uses less digits than its factorization.

12979942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1295.

The product of its digits is 81648, while the sum is 43.

The square root of 12979942 is about 3602.7686575743. The cubic root of 12979942 is about 235.0124755713.

The spelling of 12979942 in words is "twelve million, nine hundred seventy-nine thousand, nine hundred forty-two".