42781590 has 24 divisors (see below), whose sum is σ = 111232368. Its totient is φ = 11408400.

The previous prime is 42781589. The next prime is 42781619. The reversal of 42781590 is 9518724.

42781590 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 11 ways as a sum of consecutive naturals, for example, 237586 + ... + 237765.

It is an arithmetic number, because the mean of its divisors is an integer number (4634682).

Almost surely, 2^42781590 is an apocalyptic number.

42781590 is an abundant number, since it is smaller than the sum of its proper divisors (68450778).

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

42781590 is a wasteful number, since it uses less digits than its factorization.

42781590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475364 (or 475361 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 42781590 is about 6540.7637168759. The cubic root of 42781590 is about 349.7456383173.

The spelling of 42781590 in words is "forty-two million, seven hundred eighty-one thousand, five hundred ninety".