195665142 has 8 divisors (see below), whose sum is σ = 391330296. Its totient is φ = 65221712.

The previous prime is 195665111. The next prime is 195665177. The reversal of 195665142 is 241566591.

It is a sphenic number, since it is the product of 3 distinct primes.

195665142 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 195665142.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16305423 + ... + 16305434.

It is an arithmetic number, because the mean of its divisors is an integer number (48916287).

Almost surely, 2^195665142 is an apocalyptic number.

195665142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

195665142 is a wasteful number, since it uses less digits than its factorization.

195665142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32610862.

The product of its digits is 64800, while the sum is 39.

The square root of 195665142 is about 13988.0356733889. The cubic root of 195665142 is about 580.5475823455.

The spelling of 195665142 in words is "one hundred ninety-five million, six hundred sixty-five thousand, one hundred forty-two".