12940745 has 16 divisors (see below), whose sum is σ = 16174080. Its totient is φ = 9931584.

The previous prime is 12940727. The next prime is 12940747. The reversal of 12940745 is 54704921.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12940745 - 2²⁰ = 11892169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12940747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11936 + ... + 12974.

It is an arithmetic number, because the mean of its divisors is an integer number (1010880).

Almost surely, 2^12940745 is an apocalyptic number.

It is an amenable number.

12940745 is a deficient number, since it is larger than the sum of its proper divisors (3233335).

12940745 is a wasteful number, since it uses less digits than its factorization.

12940745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 12940745 is about 3597.3247003850. The cubic root of 12940745 is about 234.7756724532.

The spelling of 12940745 in words is "twelve million, nine hundred forty thousand, seven hundred forty-five".