42881630 has 32 divisors (see below), whose sum is σ = 84520800. Its totient is φ = 15534720.

The previous prime is 42881627. The next prime is 42881647. The reversal of 42881630 is 3618824.

42881630 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 15 ways as a sum of consecutive naturals, for example, 37832 + ... + 38948.

It is an arithmetic number, because the mean of its divisors is an integer number (2641275).

Almost surely, 2^42881630 is an apocalyptic number.

42881630 is a deficient number, since it is larger than the sum of its proper divisors (41639170).

42881630 is a wasteful number, since it uses less digits than its factorization.

42881630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 42881630 is about 6548.4066764366. The cubic root of 42881630 is about 350.0180398865.

The spelling of 42881630 in words is "forty-two million, eight hundred eighty-one thousand, six hundred thirty".