42864866 has 16 divisors (see below), whose sum is σ = 70346880. Its totient is φ = 19427280.

The previous prime is 42864853. The next prime is 42864869. The reversal of 42864866 is 66846824.

It is not an unprimeable number, because it can be changed into a prime (42864869) 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, 5420 + ... + 10728.

It is an arithmetic number, because the mean of its divisors is an integer number (4396680).

Almost surely, 2^42864866 is an apocalyptic number.

42864866 is a deficient number, since it is larger than the sum of its proper divisors (27482014).

42864866 is a wasteful number, since it uses less digits than its factorization.

42864866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5689.

The product of its digits is 442368, while the sum is 44.

The square root of 42864866 is about 6547.1265452869. The cubic root of 42864866 is about 349.9724223169.

The spelling of 42864866 in words is "forty-two million, eight hundred sixty-four thousand, eight hundred sixty-six".