13123120 has 20 divisors (see below), whose sum is σ = 30511440. Its totient is φ = 5249216.

The previous prime is 13123111. The next prime is 13123147. The reversal of 13123120 is 2132131.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 13123120.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81940 + ... + 82099.

It is an arithmetic number, because the mean of its divisors is an integer number (1525572).

Almost surely, 2^13123120 is an apocalyptic number.

13123120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13123120 is an abundant number, since it is smaller than the sum of its proper divisors (17388320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13123120 is a wasteful number, since it uses less digits than its factorization.

13123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164052 (or 164046 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 13123120 is about 3622.5847126051. The cubic root of 13123120 is about 235.8734359197.

Adding to 13123120 its reverse (2132131), we get a palindrome (15255251).

The spelling of 13123120 in words is "thirteen million, one hundred twenty-three thousand, one hundred twenty".