13120975 has 18 divisors (see below), whose sum is σ = 18928104. Its totient is φ = 8996400.

The previous prime is 13120949. The next prime is 13120979. The reversal of 13120975 is 57902131.

13120975 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13120975 - 2²¹ = 11023823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120979) 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 17 ways as a sum of consecutive naturals, for example, 4131 + ... + 6580.

Almost surely, 2^13120975 is an apocalyptic number.

13120975 is a deficient number, since it is larger than the sum of its proper divisors (5807129).

13120975 is a wasteful number, since it uses less digits than its factorization.

13120975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10735 (or 10723 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 13120975 is about 3622.2886411770. The cubic root of 13120975 is about 235.8605838924.

The spelling of 13120975 in words is "thirteen million, one hundred twenty thousand, nine hundred seventy-five".