12981942 has 12 divisors (see below), whose sum is σ = 28127580. Its totient is φ = 4327308.

The previous prime is 12981911. The next prime is 12981949. The reversal of 12981942 is 24918921.

12981942 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 = 12981897 and 12981906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12981949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 360592 + ... + 360627.

It is an arithmetic number, because the mean of its divisors is an integer number (2343965).

Almost surely, 2^12981942 is an apocalyptic number.

12981942 is an abundant number, since it is smaller than the sum of its proper divisors (15145638).

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

12981942 is a wasteful number, since it uses less digits than its factorization.

12981942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721227 (or 721224 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 12981942 is about 3603.0462111941. The cubic root of 12981942 is about 235.0245454971.

It can be divided in two parts, 1298 and 1942, that added together give a triangular number (3240 = T₈₀).

The spelling of 12981942 in words is "twelve million, nine hundred eighty-one thousand, nine hundred forty-two".