42840860 has 12 divisors (see below), whose sum is σ = 89965848. Its totient is φ = 17136336.

The previous prime is 42840851. The next prime is 42840913. The reversal of 42840860 is 6804824.

42840860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1071002 + ... + 1071041.

It is an arithmetic number, because the mean of its divisors is an integer number (7497154).

Almost surely, 2^42840860 is an apocalyptic number.

It is an amenable number.

42840860 is an abundant number, since it is smaller than the sum of its proper divisors (47124988).

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

42840860 is a wasteful number, since it uses less digits than its factorization.

42840860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142052 (or 2142050 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 42840860 is about 6545.2929651773. The cubic root of 42840860 is about 349.9070773727.

The spelling of 42840860 in words is "forty-two million, eight hundred forty thousand, eight hundred sixty".