195642 has 16 divisors (see below), whose sum is σ = 434880. Its totient is φ = 65196.

The previous prime is 195599. The next prime is 195659. The reversal of 195642 is 246591.

195642 is a `hidden beast` number, since 19 + 5 + 642 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1758 + ... + 1865.

It is an arithmetic number, because the mean of its divisors is an integer number (27180).

2¹⁹⁵⁶⁴² is an apocalyptic number.

195642 is an abundant number, since it is smaller than the sum of its proper divisors (239238).

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

195642 is a wasteful number, since it uses less digits than its factorization.

195642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3634 (or 3628 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 195642 is about 442.3143678426. The cubic root of 195642 is about 58.0524693646.

The spelling of 195642 in words is "one hundred ninety-five thousand, six hundred forty-two".