72134402 has 16 divisors (see below), whose sum is σ = 110365632. Its totient is φ = 35353200.

The previous prime is 72134399. The next prime is 72134437. The reversal of 72134402 is 20443127.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19073 + ... + 22539.

It is an arithmetic number, because the mean of its divisors is an integer number (6897852).

Almost surely, 2^72134402 is an apocalyptic number.

72134402 is a deficient number, since it is larger than the sum of its proper divisors (38231230).

72134402 is a wasteful number, since it uses less digits than its factorization.

72134402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 72134402 is about 8493.1973955631. The cubic root of 72134402 is about 416.2754624349.

Adding to 72134402 its reverse (20443127), we get a palindrome (92577529).

The spelling of 72134402 in words is "seventy-two million, one hundred thirty-four thousand, four hundred two".