13123724 has 12 divisors (see below), whose sum is σ = 23356200. Its totient is φ = 6450528.

The previous prime is 13123697. The next prime is 13123727. The reversal of 13123724 is 42732131.

It is a self number, because there is not a number n which added to its sum of digits gives 13123724.

It is not an unprimeable number, because it can be changed into a prime (13123727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27569 + ... + 28040.

It is an arithmetic number, because the mean of its divisors is an integer number (1946350).

Almost surely, 2^13123724 is an apocalyptic number.

It is an amenable number.

13123724 is a deficient number, since it is larger than the sum of its proper divisors (10232476).

13123724 is a wasteful number, since it uses less digits than its factorization.

13123724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55672 (or 55670 counting only the distinct ones).

The product of its digits is 1008, while the sum is 23.

The square root of 13123724 is about 3622.6680775362. The cubic root of 13123724 is about 235.8770546062.

Adding to 13123724 its reverse (42732131), we get a palindrome (55855855).

The spelling of 13123724 in words is "thirteen million, one hundred twenty-three thousand, seven hundred twenty-four".