72500123 has 8 divisors (see below), whose sum is σ = 73400016. Its totient is φ = 71604000.

The previous prime is 72500111. The next prime is 72500149. The reversal of 72500123 is 32100527.

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 72500123 - 2⁶ = 72500059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72500095 and 72500104.

It is not an unprimeable number, because it can be changed into a prime (72500173) 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, 61328 + ... + 62498.

It is an arithmetic number, because the mean of its divisors is an integer number (9175002).

Almost surely, 2^72500123 is an apocalyptic number.

72500123 is a deficient number, since it is larger than the sum of its proper divisors (899893).

72500123 is a wasteful number, since it uses less digits than its factorization.

72500123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 72500123 is about 8514.7004057688. The cubic root of 72500123 is about 416.9777815780.

The spelling of 72500123 in words is "seventy-two million, five hundred thousand, one hundred twenty-three".