42722756 has 12 divisors (see below), whose sum is σ = 75666192. Its totient is φ = 21103848.

The previous prime is 42722749. The next prime is 42722783. The reversal of 42722756 is 65722724.

42722756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 64010 + ... + 64673.

It is an arithmetic number, because the mean of its divisors is an integer number (6305516).

Almost surely, 2^42722756 is an apocalyptic number.

It is an amenable number.

42722756 is a deficient number, since it is larger than the sum of its proper divisors (32943436).

42722756 is a wasteful number, since it uses less digits than its factorization.

42722756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128770 (or 128768 counting only the distinct ones).

The product of its digits is 47040, while the sum is 35.

The square root of 42722756 is about 6536.2646825232. The cubic root of 42722756 is about 349.5852393023.

The spelling of 42722756 in words is "forty-two million, seven hundred twenty-two thousand, seven hundred fifty-six".