72153123 has 8 divisors (see below), whose sum is σ = 109947648. Its totient is φ = 41230344.

The previous prime is 72153121. The next prime is 72153143. The reversal of 72153123 is 32135127.

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

It is not a de Polignac number, because 72153123 - 2¹ = 72153121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72153093 and 72153102.

It is not an unprimeable number, because it can be changed into a prime (72153121) 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, 1717911 + ... + 1717952.

It is an arithmetic number, because the mean of its divisors is an integer number (13743456).

Almost surely, 2^72153123 is an apocalyptic number.

72153123 is a deficient number, since it is larger than the sum of its proper divisors (37794525).

72153123 is a wasteful number, since it uses less digits than its factorization.

72153123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435873.

The product of its digits is 1260, while the sum is 24.

The square root of 72153123 is about 8494.2994413901. The cubic root of 72153123 is about 416.3114712307.

The spelling of 72153123 in words is "seventy-two million, one hundred fifty-three thousand, one hundred twenty-three".