72140875 has 16 divisors (see below), whose sum is σ = 92941056. Its totient is φ = 55848000.

The previous prime is 72140867. The next prime is 72140881. The reversal of 72140875 is 57804127.

It is a happy number.

It is not a de Polignac number, because 72140875 - 2³ = 72140867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72140875.

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 15 ways as a sum of consecutive naturals, for example, 5434 + ... + 13183.

It is an arithmetic number, because the mean of its divisors is an integer number (5808816).

Almost surely, 2^72140875 is an apocalyptic number.

72140875 is a deficient number, since it is larger than the sum of its proper divisors (20800181).

72140875 is a wasteful number, since it uses less digits than its factorization.

72140875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18663 (or 18653 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 72140875 is about 8493.5784566930. The cubic root of 72140875 is about 416.2879135928.

The spelling of 72140875 in words is "seventy-two million, one hundred forty thousand, eight hundred seventy-five".