72124104 has 64 divisors (see below), whose sum is σ = 200471040. Its totient is φ = 21473280.

The previous prime is 72124069. The next prime is 72124109. The reversal of 72124104 is 40142127.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72124109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5944 + ... + 13400.

It is an arithmetic number, because the mean of its divisors is an integer number (3132360).

Almost surely, 2^72124104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72124104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100235520).

72124104 is an abundant number, since it is smaller than the sum of its proper divisors (128346936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72124104 is a wasteful number, since it uses less digits than its factorization.

72124104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7510 (or 7506 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 72124104 is about 8492.5911240328. The cubic root of 72124104 is about 416.2556521521.

The spelling of 72124104 in words is "seventy-two million, one hundred twenty-four thousand, one hundred four".