42635566 has 8 divisors (see below), whose sum is σ = 63981144. Its totient is φ = 21308520.

The previous prime is 42635557. The next prime is 42635573. The reversal of 42635566 is 66553624.

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

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, 6021 + ... + 11023.

It is an arithmetic number, because the mean of its divisors is an integer number (7997643).

Almost surely, 2^42635566 is an apocalyptic number.

42635566 is a deficient number, since it is larger than the sum of its proper divisors (21345578).

42635566 is a wasteful number, since it uses less digits than its factorization.

42635566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9266.

The product of its digits is 129600, while the sum is 37.

The square root of 42635566 is about 6529.5915645621. The cubic root of 42635566 is about 349.3472623356.

The spelling of 42635566 in words is "forty-two million, six hundred thirty-five thousand, five hundred sixty-six".