42231868 has 12 divisors (see below), whose sum is σ = 84463792. Its totient is φ = 18099360.

The previous prime is 42231853. The next prime is 42231869. The reversal of 42231868 is 86813224.

42231868 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42231869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754113 + ... + 754168.

Almost surely, 2^42231868 is an apocalyptic number.

It is an amenable number.

42231868 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.

42231868 is a wasteful number, since it uses less digits than its factorization.

42231868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508292 (or 1508290 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 42231868 is about 6498.6050810924. The cubic root of 42231868 is about 348.2411571055.

The spelling of 42231868 in words is "forty-two million, two hundred thirty-one thousand, eight hundred sixty-eight".