72055642 has 8 divisors (see below), whose sum is σ = 112782816. Its totient is φ = 34461372.

The previous prime is 72055631. The next prime is 72055661. The reversal of 72055642 is 24655027.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783168 + ... + 783259.

It is an arithmetic number, because the mean of its divisors is an integer number (14097852).

Almost surely, 2^72055642 is an apocalyptic number.

72055642 is a deficient number, since it is larger than the sum of its proper divisors (40727174).

72055642 is a wasteful number, since it uses less digits than its factorization.

72055642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566452.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 72055642 is about 8488.5594773200. The cubic root of 72055642 is about 416.1239037049.

The spelling of 72055642 in words is "seventy-two million, fifty-five thousand, six hundred forty-two".