42840912 has 40 divisors (see below), whose sum is σ = 111485920. Its totient is φ = 14175360.

The previous prime is 42840851. The next prime is 42840913. The reversal of 42840912 is 21904824.

It is a self number, because there is not a number n which added to its sum of digits gives 42840912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42840913) 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, 3462 + ... + 9882.

It is an arithmetic number, because the mean of its divisors is an integer number (2787148).

Almost surely, 2^42840912 is an apocalyptic number.

It is an amenable number.

42840912 is an abundant number, since it is smaller than the sum of its proper divisors (68645008).

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

42840912 is a wasteful number, since it uses less digits than its factorization.

42840912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6571 (or 6565 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 42840912 is about 6545.2969374964. The cubic root of 42840912 is about 349.9072189444.

The spelling of 42840912 in words is "forty-two million, eight hundred forty thousand, nine hundred twelve".