12387642 has 16 divisors (see below), whose sum is σ = 24833952. Its totient is φ = 4119440.

The previous prime is 12387629. The next prime is 12387653. The reversal of 12387642 is 24678321.

12387642 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 592 + ... + 5012.

It is an arithmetic number, because the mean of its divisors is an integer number (1552122).

Almost surely, 2^12387642 is an apocalyptic number.

12387642 is an abundant number, since it is smaller than the sum of its proper divisors (12446310).

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

12387642 is a wasteful number, since it uses less digits than its factorization.

12387642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4893.

The product of its digits is 16128, while the sum is 33.

The square root of 12387642 is about 3519.6082168332. The cubic root of 12387642 is about 231.3819882508.

The spelling of 12387642 in words is "twelve million, three hundred eighty-seven thousand, six hundred forty-two".