72504243 has 12 divisors (see below), whose sum is σ = 119689648. Its totient is φ = 41430960.

The previous prime is 72504239. The next prime is 72504283. The reversal of 72504243 is 34240527.

It is not a de Polignac number, because 72504243 - 2² = 72504239 is a prime.

It is a super-3 number, since 3×72504243³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72504203) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 575368 + ... + 575493.

Almost surely, 2^72504243 is an apocalyptic number.

72504243 is a deficient number, since it is larger than the sum of its proper divisors (47185405).

72504243 is a wasteful number, since it uses less digits than its factorization.

72504243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150874 (or 1150871 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 72504243 is about 8514.9423368570. The cubic root of 72504243 is about 416.9856800286.

The spelling of 72504243 in words is "seventy-two million, five hundred four thousand, two hundred forty-three".