72097642 has 8 divisors (see below), whose sum is σ = 108354816. Its totient is φ = 35979372.

The previous prime is 72097633. The next prime is 72097667. The reversal of 72097642 is 24679027.

It is a happy number.

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

It is an unprimeable number.

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, 33418 + ... + 35509.

It is an arithmetic number, because the mean of its divisors is an integer number (13544352).

Almost surely, 2^72097642 is an apocalyptic number.

72097642 is a deficient number, since it is larger than the sum of its proper divisors (36257174).

72097642 is a wasteful number, since it uses less digits than its factorization.

72097642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69452.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 72097642 is about 8491.0330349139. The cubic root of 72097642 is about 416.2047385007.

The spelling of 72097642 in words is "seventy-two million, ninety-seven thousand, six hundred forty-two".