42785900 has 18 divisors (see below), whose sum is σ = 92845620. Its totient is φ = 17114320.

The previous prime is 42785887. The next prime is 42785909. The reversal of 42785900 is 958724.

It is a happy number.

42785900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42785909) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 213830 + ... + 214029.

It is an arithmetic number, because the mean of its divisors is an integer number (5158090).

Almost surely, 2^42785900 is an apocalyptic number.

It is an amenable number.

42785900 is an abundant number, since it is smaller than the sum of its proper divisors (50059720).

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

42785900 is a wasteful number, since it uses less digits than its factorization.

42785900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427873 (or 427866 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 42785900 is about 6541.0931808070. The cubic root of 42785900 is about 349.7573828791.

The spelling of 42785900 in words is "forty-two million, seven hundred eighty-five thousand, nine hundred".