42347990 has 16 divisors (see below), whose sum is σ = 76425552. Its totient is φ = 16894944.

The previous prime is 42347989. The next prime is 42348013. The reversal of 42347990 is 9974324.

42347990 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 7 ways as a sum of consecutive naturals, for example, 1364 + ... + 9303.

It is an arithmetic number, because the mean of its divisors is an integer number (4776597).

Almost surely, 2^42347990 is an apocalyptic number.

42347990 is a deficient number, since it is larger than the sum of its proper divisors (34077562).

42347990 is a wasteful number, since it uses less digits than its factorization.

42347990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11071.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 42347990 is about 6507.5333268451. The cubic root of 42347990 is about 348.5600430912.

The spelling of 42347990 in words is "forty-two million, three hundred forty-seven thousand, nine hundred ninety".