42388722 has 24 divisors (see below), whose sum is σ = 91962000. Its totient is φ = 14111160.

The previous prime is 42388721. The next prime is 42388729. The reversal of 42388722 is 22788324.

42388722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42388721) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 26197 + ... + 27767.

It is an arithmetic number, because the mean of its divisors is an integer number (3831750).

Almost surely, 2^42388722 is an apocalyptic number.

42388722 is an abundant number, since it is smaller than the sum of its proper divisors (49573278).

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

42388722 is a wasteful number, since it uses less digits than its factorization.

42388722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3078 (or 3075 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 42388722 is about 6510.6621783041. The cubic root of 42388722 is about 348.6717603036.

The spelling of 42388722 in words is "forty-two million, three hundred eighty-eight thousand, seven hundred twenty-two".