13440642 has 16 divisors (see below), whose sum is σ = 28462752. Its totient is φ = 4216640.

The previous prime is 13440617. The next prime is 13440653. The reversal of 13440642 is 24604431.

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, 65784 + ... + 65987.

It is an arithmetic number, because the mean of its divisors is an integer number (1778922).

Almost surely, 2^13440642 is an apocalyptic number.

13440642 is an abundant number, since it is smaller than the sum of its proper divisors (15022110).

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

13440642 is a wasteful number, since it uses less digits than its factorization.

13440642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131793.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 13440642 is about 3666.1481148475. The cubic root of 13440642 is about 237.7606637624.

The spelling of 13440642 in words is "thirteen million, four hundred forty thousand, six hundred forty-two".