72356123 has 8 divisors (see below), whose sum is σ = 87045120. Its totient is φ = 58755240.

The previous prime is 72356117. The next prime is 72356149. The reversal of 72356123 is 32165327.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72356123 - 2⁴ = 72356107 is a prime.

It is a super-2 number, since 2×72356123² = 10470817071182258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72356113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271883 + ... + 272148.

It is an arithmetic number, because the mean of its divisors is an integer number (10880640).

Almost surely, 2^72356123 is an apocalyptic number.

72356123 is a deficient number, since it is larger than the sum of its proper divisors (14688997).

72356123 is a wasteful number, since it uses less digits than its factorization.

72356123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544057.

The product of its digits is 7560, while the sum is 29.

The square root of 72356123 is about 8506.2402387894. The cubic root of 72356123 is about 416.7015310204.

The spelling of 72356123 in words is "seventy-two million, three hundred fifty-six thousand, one hundred twenty-three".