12642475 has 24 divisors (see below), whose sum is σ = 16793568. Its totient is φ = 9408000.

The previous prime is 12642457. The next prime is 12642491. The reversal of 12642475 is 57424621.

It is not a de Polignac number, because 12642475 - 2⁹ = 12641963 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64077 + ... + 64273.

It is an arithmetic number, because the mean of its divisors is an integer number (699732).

Almost surely, 2^12642475 is an apocalyptic number.

12642475 is a deficient number, since it is larger than the sum of its proper divisors (4151093).

12642475 is a wasteful number, since it uses less digits than its factorization.

12642475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 370 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 12642475 is about 3555.6258239584. The cubic root of 12642475 is about 232.9578598414.

The spelling of 12642475 in words is "twelve million, six hundred forty-two thousand, four hundred seventy-five".