42989868 has 18 divisors (see below), whose sum is σ = 108668924. Its totient is φ = 14329944.

The previous prime is 42989857. The next prime is 42989873. The reversal of 42989868 is 86898924.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 597046 + ... + 597117.

Almost surely, 2^42989868 is an apocalyptic number.

It is an amenable number.

42989868 is an abundant number, since it is smaller than the sum of its proper divisors (65679056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42989868 is a wasteful number, since it uses less digits than its factorization.

42989868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194173 (or 1194168 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 42989868 is about 6556.6659210303. The cubic root of 42989868 is about 350.3122872654.

The spelling of 42989868 in words is "forty-two million, nine hundred eighty-nine thousand, eight hundred sixty-eight".