42664422 has 8 divisors (see below), whose sum is σ = 85328856. Its totient is φ = 14221472.

The previous prime is 42664381. The next prime is 42664451. The reversal of 42664422 is 22446624.

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

42664422 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 42664422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3555363 + ... + 3555374.

It is an arithmetic number, because the mean of its divisors is an integer number (10666107).

Almost surely, 2^42664422 is an apocalyptic number.

42664422 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42664422 is a wasteful number, since it uses less digits than its factorization.

42664422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7110742.

The product of its digits is 18432, while the sum is 30.

The square root of 42664422 is about 6531.8008236626. The cubic root of 42664422 is about 349.4260579841.

The spelling of 42664422 in words is "forty-two million, six hundred sixty-four thousand, four hundred twenty-two".