12642745 has 8 divisors (see below), whose sum is σ = 15281280. Its totient is φ = 10040880.

The previous prime is 12642743. The next prime is 12642767. The reversal of 12642745 is 54724621.

12642745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12642745 - 2¹ = 12642743 is a prime.

It is a super-2 number, since 2×12642745² = 319678002270050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12642743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8401 + ... + 9790.

It is an arithmetic number, because the mean of its divisors is an integer number (1910160).

Almost surely, 2^12642745 is an apocalyptic number.

It is an amenable number.

12642745 is a deficient number, since it is larger than the sum of its proper divisors (2638535).

12642745 is a wasteful number, since it uses less digits than its factorization.

12642745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18335.

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

The square root of 12642745 is about 3555.6637917553. The cubic root of 12642745 is about 232.9595182238.

The spelling of 12642745 in words is "twelve million, six hundred forty-two thousand, seven hundred forty-five".