72124365 has 16 divisors (see below), whose sum is σ = 116981568. Its totient is φ = 37938816.

The previous prime is 72124357. The next prime is 72124369. The reversal of 72124365 is 56342127.

It is not a de Polignac number, because 72124365 - 2³ = 72124357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72124369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31839 + ... + 34028.

It is an arithmetic number, because the mean of its divisors is an integer number (7311348).

Almost surely, 2^72124365 is an apocalyptic number.

It is an amenable number.

72124365 is a deficient number, since it is larger than the sum of its proper divisors (44857203).

72124365 is a wasteful number, since it uses less digits than its factorization.

72124365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65948.

The product of its digits is 10080, while the sum is 30.

The square root of 72124365 is about 8492.6064903538. The cubic root of 72124365 is about 416.2561542616.

The spelling of 72124365 in words is "seventy-two million, one hundred twenty-four thousand, three hundred sixty-five".