42008668 has 18 divisors (see below), whose sum is σ = 79606464. Its totient is φ = 19388304.

The previous prime is 42008621. The next prime is 42008671. The reversal of 42008668 is 86680024.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30396 + ... + 31747.

Almost surely, 2^42008668 is an apocalyptic number.

It is an amenable number.

42008668 is a deficient number, since it is larger than the sum of its proper divisors (37597796).

42008668 is a wasteful number, since it uses less digits than its factorization.

42008668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62173 (or 62158 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 42008668 is about 6481.4094146258. The cubic root of 42008668 is about 347.6265757001.

The spelling of 42008668 in words is "forty-two million, eight thousand, six hundred sixty-eight".