42722118 has 24 divisors (see below), whose sum is σ = 92821248. Its totient is φ = 14201232.

The previous prime is 42722111. The next prime is 42722131. The reversal of 42722118 is 81122724.

42722118 is a `hidden beast` number, since 427 + 221 + 18 = 666.

42722118 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 42722091 and 42722100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42722111) 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, 3796 + ... + 9992.

It is an arithmetic number, because the mean of its divisors is an integer number (3867552).

Almost surely, 2^42722118 is an apocalyptic number.

42722118 is an abundant number, since it is smaller than the sum of its proper divisors (50099130).

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

42722118 is a wasteful number, since it uses less digits than its factorization.

42722118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6588 (or 6585 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 42722118 is about 6536.2158777078. The cubic root of 42722118 is about 349.5834991173.

The spelling of 42722118 in words is "forty-two million, seven hundred twenty-two thousand, one hundred eighteen".