42317985 has 16 divisors (see below), whose sum is σ = 67798080. Its totient is φ = 22539840.

The previous prime is 42317971. The next prime is 42318011. The reversal of 42317985 is 58971324.

It is not a de Polignac number, because 42317985 - 2⁷ = 42317857 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 14586 + ... + 17244.

It is an arithmetic number, because the mean of its divisors is an integer number (4237380).

Almost surely, 2^42317985 is an apocalyptic number.

It is an amenable number.

42317985 is a deficient number, since it is larger than the sum of its proper divisors (25480095).

42317985 is a wasteful number, since it uses less digits than its factorization.

42317985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3728.

The product of its digits is 60480, while the sum is 39.

The square root of 42317985 is about 6505.2275133157. The cubic root of 42317985 is about 348.4777014016.

The spelling of 42317985 in words is "forty-two million, three hundred seventeen thousand, nine hundred eighty-five".