12742645 has 16 divisors (see below), whose sum is σ = 15649920. Its totient is φ = 9958464.

The previous prime is 12742637. The next prime is 12742651. The reversal of 12742645 is 54624721.

It is a cyclic number.

It is not a de Polignac number, because 12742645 - 2³ = 12742637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56022 + ... + 56248.

It is an arithmetic number, because the mean of its divisors is an integer number (978120).

Almost surely, 2^12742645 is an apocalyptic number.

It is an amenable number.

12742645 is a deficient number, since it is larger than the sum of its proper divisors (2907275).

12742645 is a wasteful number, since it uses less digits than its factorization.

12742645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444.

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

The square root of 12742645 is about 3569.6841596982. The cubic root of 12742645 is about 233.5715062375.

The spelling of 12742645 in words is "twelve million, seven hundred forty-two thousand, six hundred forty-five".