42718666 has 16 divisors (see below), whose sum is σ = 65352960. Its totient is φ = 20936880.

The previous prime is 42718639. The next prime is 42718667. The reversal of 42718666 is 66681724.

It is not an unprimeable number, because it can be changed into a prime (42718667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59055 + ... + 59773.

It is an arithmetic number, because the mean of its divisors is an integer number (4084560).

Almost surely, 2^42718666 is an apocalyptic number.

42718666 is a deficient number, since it is larger than the sum of its proper divisors (22634294).

42718666 is a wasteful number, since it uses less digits than its factorization.

42718666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269.

The product of its digits is 96768, while the sum is 40.

The square root of 42718666 is about 6535.9518052079. The cubic root of 42718666 is about 349.5740832706.

The spelling of 42718666 in words is "forty-two million, seven hundred eighteen thousand, six hundred sixty-six".