42099866 has 16 divisors (see below), whose sum is σ = 64870848. Its totient is φ = 20479200.

The previous prime is 42099859. The next prime is 42099901. The reversal of 42099866 is 66899024.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56291 + ... + 57033.

It is an arithmetic number, because the mean of its divisors is an integer number (4054428).

Almost surely, 2^42099866 is an apocalyptic number.

42099866 is a deficient number, since it is larger than the sum of its proper divisors (22770982).

42099866 is a wasteful number, since it uses less digits than its factorization.

42099866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 42099866 is about 6488.4409529563. The cubic root of 42099866 is about 347.8779518724.

The spelling of 42099866 in words is "forty-two million, ninety-nine thousand, eight hundred sixty-six".