42668986 has 16 divisors (see below), whose sum is σ = 66141504. Its totient is φ = 20631744.

The previous prime is 42668959. The next prime is 42668993. The reversal of 42668986 is 68986624.

42668986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6450 + ... + 11266.

It is an arithmetic number, because the mean of its divisors is an integer number (4133844).

Almost surely, 2^42668986 is an apocalyptic number.

42668986 is a deficient number, since it is larger than the sum of its proper divisors (23472518).

42668986 is a wasteful number, since it uses less digits than its factorization.

42668986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4965.

The product of its digits is 995328, while the sum is 49.

The square root of 42668986 is about 6532.1501819845. The cubic root of 42668986 is about 349.4385174182.

The spelling of 42668986 in words is "forty-two million, six hundred sixty-eight thousand, nine hundred eighty-six".