72179742 has 8 divisors (see below), whose sum is σ = 144359496. Its totient is φ = 24059912.

The previous prime is 72179717. The next prime is 72179743. The reversal of 72179742 is 24797127.

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

72179742 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 72179742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72179743) by changing a digit.

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, 6014973 + ... + 6014984.

It is an arithmetic number, because the mean of its divisors is an integer number (18044937).

Almost surely, 2^72179742 is an apocalyptic number.

72179742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72179742 is a wasteful number, since it uses less digits than its factorization.

72179742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12029962.

The product of its digits is 49392, while the sum is 39.

The square root of 72179742 is about 8495.8661712624. The cubic root of 72179742 is about 416.3626606646.

The spelling of 72179742 in words is "seventy-two million, one hundred seventy-nine thousand, seven hundred forty-two".