72104371 has 4 divisors (see below), whose sum is σ = 72295000. Its totient is φ = 71913744.

The previous prime is 72104369. The next prime is 72104381. The reversal of 72104371 is 17340127.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17340127 = 7 ⋅2477161.

It is a cyclic number.

It is not a de Polignac number, because 72104371 - 2¹ = 72104369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72104311) 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 3 ways as a sum of consecutive naturals, for example, 94746 + ... + 95503.

It is an arithmetic number, because the mean of its divisors is an integer number (18073750).

Almost surely, 2^72104371 is an apocalyptic number.

72104371 is a deficient number, since it is larger than the sum of its proper divisors (190629).

72104371 is a wasteful number, since it uses less digits than its factorization.

72104371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190628.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 72104371 is about 8491.4292672082. The cubic root of 72104371 is about 416.2176864718.

Adding to 72104371 its reverse (17340127), we get a palindrome (89444498).

The spelling of 72104371 in words is "seventy-two million, one hundred four thousand, three hundred seventy-one".