42422666 has 16 divisors (see below), whose sum is σ = 74759328. Its totient is φ = 17799600.

The previous prime is 42422641. The next prime is 42422669. The reversal of 42422666 is 66622424.

It is not an unprimeable number, because it can be changed into a prime (42422669) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 73880 + ... + 74451.

It is an arithmetic number, because the mean of its divisors is an integer number (4672458).

Almost surely, 2^42422666 is an apocalyptic number.

42422666 is a deficient number, since it is larger than the sum of its proper divisors (32336662).

42422666 is a wasteful number, since it uses less digits than its factorization.

42422666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148357.

The product of its digits is 27648, while the sum is 32.

The square root of 42422666 is about 6513.2684575411. The cubic root of 42422666 is about 348.7648051508.

The spelling of 42422666 in words is "forty-two million, four hundred twenty-two thousand, six hundred sixty-six".