12981542 has 16 divisors (see below), whose sum is σ = 22313760. Its totient is φ = 5548608.

The previous prime is 12981539. The next prime is 12981581. The reversal of 12981542 is 24518921.

It is a junction number, because it is equal to n+sod(n) for n = 12981499 and 12981508.

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, 5384 + ... + 7412.

It is an arithmetic number, because the mean of its divisors is an integer number (1394610).

Almost surely, 2^12981542 is an apocalyptic number.

12981542 is a deficient number, since it is larger than the sum of its proper divisors (9332218).

12981542 is a wasteful number, since it uses less digits than its factorization.

12981542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495.

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

The square root of 12981542 is about 3602.9907021806. The cubic root of 12981542 is about 235.0221316111.

The spelling of 12981542 in words is "twelve million, nine hundred eighty-one thousand, five hundred forty-two".