12407642 has 12 divisors (see below), whose sum is σ = 20153790. Its totient is φ = 5726448.

The previous prime is 12407639. The next prime is 12407699. The reversal of 12407642 is 24670421.

It can be written as a sum of positive squares in 3 ways, for example, as 5900041 + 6507601 = 2429^2 + 2551^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18017 + ... + 18692.

Almost surely, 2^12407642 is an apocalyptic number.

12407642 is a deficient number, since it is larger than the sum of its proper divisors (7746148).

12407642 is a wasteful number, since it uses less digits than its factorization.

12407642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36737 (or 36724 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 12407642 is about 3522.4482962848. The cubic root of 12407642 is about 231.5064443158.

The spelling of 12407642 in words is "twelve million, four hundred seven thousand, six hundred forty-two".