72397142 has 8 divisors (see below), whose sum is σ = 108829656. Its totient is φ = 36120592.

The previous prime is 72397133. The next prime is 72397153. The reversal of 72397142 is 24179327.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 37823 + ... + 39690.

It is an arithmetic number, because the mean of its divisors is an integer number (13603707).

Almost surely, 2^72397142 is an apocalyptic number.

72397142 is a deficient number, since it is larger than the sum of its proper divisors (36432514).

72397142 is a wasteful number, since it uses less digits than its factorization.

72397142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77982.

The product of its digits is 21168, while the sum is 35.

The square root of 72397142 is about 8508.6510094139. The cubic root of 72397142 is about 416.7802594470.

The spelling of 72397142 in words is "seventy-two million, three hundred ninety-seven thousand, one hundred forty-two".