195688242 has 24 divisors (see below), whose sum is σ = 426129600. Its totient is φ = 64900440.

The previous prime is 195688219. The next prime is 195688249. The reversal of 195688242 is 242886591.

195688242 is a `hidden beast` number, since 1 + 9 + 568 + 82 + 4 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (195688249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23734 + ... + 30897.

It is an arithmetic number, because the mean of its divisors is an integer number (17755400).

Almost surely, 2^195688242 is an apocalyptic number.

195688242 is an abundant number, since it is smaller than the sum of its proper divisors (230441358).

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

195688242 is a wasteful number, since it uses less digits than its factorization.

195688242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54838 (or 54835 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 195688242 is about 13988.8613546636. The cubic root of 195688242 is about 580.5704277048.

The spelling of 195688242 in words is "one hundred ninety-five million, six hundred eighty-eight thousand, two hundred forty-two".