42131790 has 48 divisors (see below), whose sum is σ = 113083776. Its totient is φ = 10872000.

The previous prime is 42131779. The next prime is 42131807. The reversal of 42131790 is 9713124.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4761 + ... + 10340.

It is an arithmetic number, because the mean of its divisors is an integer number (2355912).

Almost surely, 2^42131790 is an apocalyptic number.

42131790 is an abundant number, since it is smaller than the sum of its proper divisors (70951986).

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

42131790 is a wasteful number, since it uses less digits than its factorization.

42131790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15145 (or 15142 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 42131790 is about 6490.9005538523. The cubic root of 42131790 is about 347.9658607017.

The spelling of 42131790 in words is "forty-two million, one hundred thirty-one thousand, seven hundred ninety".