42928185 has 16 divisors (see below), whose sum is σ = 69100416. Its totient is φ = 22756608.

The previous prime is 42928183. The next prime is 42928199. The reversal of 42928185 is 58182924.

It is not a de Polignac number, because 42928185 - 2¹ = 42928183 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42928183) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6064 + ... + 11073.

It is an arithmetic number, because the mean of its divisors is an integer number (4318776).

Almost surely, 2^42928185 is an apocalyptic number.

It is an amenable number.

42928185 is a deficient number, since it is larger than the sum of its proper divisors (26172231).

42928185 is a wasteful number, since it uses less digits than its factorization.

42928185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17312.

The product of its digits is 46080, while the sum is 39.

The square root of 42928185 is about 6551.9603936532. The cubic root of 42928185 is about 350.1446612891.

The spelling of 42928185 in words is "forty-two million, nine hundred twenty-eight thousand, one hundred eighty-five".