39720124 has 6 divisors (see below), whose sum is σ = 69510224. Its totient is φ = 19860060.

The previous prime is 39720113. The next prime is 39720137. The reversal of 39720124 is 42102793.

39720124 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 39720092 and 39720101.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4965012 + ... + 4965019.

Almost surely, 2^39720124 is an apocalyptic number.

It is an amenable number.

39720124 is a deficient number, since it is larger than the sum of its proper divisors (29790100).

39720124 is a wasteful number, since it uses less digits than its factorization.

39720124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9930035 (or 9930033 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 39720124 is about 6302.3903401805. The cubic root of 39720124 is about 341.1956863650.

The spelling of 39720124 in words is "thirty-nine million, seven hundred twenty thousand, one hundred twenty-four".