12542981 has 12 divisors (see below), whose sum is σ = 14389536. Its totient is φ = 10904520.

The previous prime is 12542951. The next prime is 12542989. The reversal of 12542981 is 18924521.

12542981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12542981 - 2⁶ = 12542917 is a prime.

It is a super-2 number, since 2×12542981² = 314652744732722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12542989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 530 + ... + 5036.

It is an arithmetic number, because the mean of its divisors is an integer number (1199128).

Almost surely, 2^12542981 is an apocalyptic number.

12542981 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12542981 is a deficient number, since it is larger than the sum of its proper divisors (1846555).

12542981 is a wasteful number, since it uses less digits than its factorization.

12542981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4552 (or 4541 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 12542981 is about 3541.6071210681. The cubic root of 12542981 is about 232.3451375558.

The spelling of 12542981 in words is "twelve million, five hundred forty-two thousand, nine hundred eighty-one".