42651868 has 12 divisors (see below), whose sum is σ = 85303792. Its totient is φ = 18279360.

The previous prime is 42651841. The next prime is 42651881. The reversal of 42651868 is 86815624.

42651868 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 42651868.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 761613 + ... + 761668.

Almost surely, 2^42651868 is an apocalyptic number.

It is an amenable number.

42651868 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42651868 is a wasteful number, since it uses less digits than its factorization.

42651868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523292 (or 1523290 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 42651868 is about 6530.8397622358. The cubic root of 42651868 is about 349.3917817663.

The spelling of 42651868 in words is "forty-two million, six hundred fifty-one thousand, eight hundred sixty-eight".