72264242 has 6 divisors (see below), whose sum is σ = 108414399. Its totient is φ = 36126110.

The previous prime is 72264217. The next prime is 72264253. The reversal of 72264242 is 24246227.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 36132121 + 36132121 = 6011^2 + 6011^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6011.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9017 + ... + 15027.

Almost surely, 2^72264242 is an apocalyptic number.

72264242 is a deficient number, since it is larger than the sum of its proper divisors (36150157).

72264242 is an frugal number, since it uses more digits than its factorization.

72264242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12024 (or 6013 counting only the distinct ones).

The product of its digits is 10752, while the sum is 29.

The square root of 72264242 is about 8500.8377234247. The cubic root of 72264242 is about 416.5250743071.

The spelling of 72264242 in words is "seventy-two million, two hundred sixty-four thousand, two hundred forty-two".