39121424 has 10 divisors (see below), whose sum is σ = 75797790. Its totient is φ = 19560704.

The previous prime is 39121409. The next prime is 39121427. The reversal of 39121424 is 42412193.

It can be written as a sum of positive squares in only one way, i.e., 36966400 + 2155024 = 6080^2 + 1468^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39121393 and 39121402.

It is not an unprimeable number, because it can be changed into a prime (39121427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1222529 + ... + 1222560.

It is an arithmetic number, because the mean of its divisors is an integer number (7579779).

Almost surely, 2^39121424 is an apocalyptic number.

It is an amenable number.

39121424 is a deficient number, since it is larger than the sum of its proper divisors (36676366).

39121424 is a wasteful number, since it uses less digits than its factorization.

39121424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445097 (or 2445091 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 39121424 is about 6254.7121436562. The cubic root of 39121424 is about 339.4727236616.

The spelling of 39121424 in words is "thirty-nine million, one hundred twenty-one thousand, four hundred twenty-four".