42313820 has 24 divisors (see below), whose sum is σ = 89513424. Its totient is φ = 16800896.

The previous prime is 42313819. The next prime is 42313837. The reversal of 42313820 is 2831324.

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 7 ways as a sum of consecutive naturals, for example, 4982 + ... + 10461.

It is an arithmetic number, because the mean of its divisors is an integer number (3729726).

Almost surely, 2^42313820 is an apocalyptic number.

It is an amenable number.

42313820 is an abundant number, since it is smaller than the sum of its proper divisors (47199604).

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

42313820 is a wasteful number, since it uses less digits than its factorization.

42313820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15589 (or 15587 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 42313820 is about 6504.9073782799. The cubic root of 42313820 is about 348.4662684593.

The spelling of 42313820 in words is "forty-two million, three hundred thirteen thousand, eight hundred twenty".