72124415 has 8 divisors (see below), whose sum is σ = 94417488. Its totient is φ = 52454080.

The previous prime is 72124391. The next prime is 72124417. The reversal of 72124415 is 51442127.

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

It is not a de Polignac number, because 72124415 - 2¹² = 72120319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72124417) 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, 655622 + ... + 655731.

It is an arithmetic number, because the mean of its divisors is an integer number (11802186).

Almost surely, 2^72124415 is an apocalyptic number.

72124415 is a deficient number, since it is larger than the sum of its proper divisors (22293073).

72124415 is a wasteful number, since it uses less digits than its factorization.

72124415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311369.

The product of its digits is 2240, while the sum is 26.

The square root of 72124415 is about 8492.6094340903. The cubic root of 72124415 is about 416.2562504510.

The spelling of 72124415 in words is "seventy-two million, one hundred twenty-four thousand, four hundred fifteen".