42840524 has 12 divisors (see below), whose sum is σ = 76997424. Its totient is φ = 20841264.

The previous prime is 42840517. The next prime is 42840557. The reversal of 42840524 is 42504824.

42840524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 144584 + ... + 144879.

It is an arithmetic number, because the mean of its divisors is an integer number (6416452).

Almost surely, 2^42840524 is an apocalyptic number.

It is an amenable number.

42840524 is a deficient number, since it is larger than the sum of its proper divisors (34156900).

42840524 is a wasteful number, since it uses less digits than its factorization.

42840524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289504 (or 289502 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 42840524 is about 6545.2672978267. The cubic root of 42840524 is about 349.9061625989.

The spelling of 42840524 in words is "forty-two million, eight hundred forty thousand, five hundred twenty-four".