72123052 has 12 divisors (see below), whose sum is σ = 126309456. Its totient is φ = 36034640.

The previous prime is 72123047. The next prime is 72123067. The reversal of 72123052 is 25032127.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78 + ... + 12010.

It is an arithmetic number, because the mean of its divisors is an integer number (10525788).

Almost surely, 2^72123052 is an apocalyptic number.

It is an amenable number.

72123052 is a deficient number, since it is larger than the sum of its proper divisors (54186404).

72123052 is a wasteful number, since it uses less digits than its factorization.

72123052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13448 (or 13446 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 72123052 is about 8492.5291874682. The cubic root of 72123052 is about 416.2536283114.

Adding to 72123052 its reverse (25032127), we get a palindrome (97155179).

The spelling of 72123052 in words is "seventy-two million, one hundred twenty-three thousand, fifty-two".