42785918 has 12 divisors (see below), whose sum is σ = 74657232. Its totient is φ = 18336780.

The previous prime is 42785909. The next prime is 42785959. The reversal of 42785918 is 81958724.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218198 + ... + 218393.

It is an arithmetic number, because the mean of its divisors is an integer number (6221436).

Almost surely, 2^42785918 is an apocalyptic number.

42785918 is a deficient number, since it is larger than the sum of its proper divisors (31871314).

42785918 is a wasteful number, since it uses less digits than its factorization.

42785918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436607 (or 436600 counting only the distinct ones).

The product of its digits is 161280, while the sum is 44.

The square root of 42785918 is about 6541.0945567237. The cubic root of 42785918 is about 349.7574319266.

The spelling of 42785918 in words is "forty-two million, seven hundred eighty-five thousand, nine hundred eighteen".