195542 has 4 divisors (see below), whose sum is σ = 293316. Its totient is φ = 97770.

The previous prime is 195541. The next prime is 195581. The reversal of 195542 is 245591.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48884 + ... + 48887.

It is an arithmetic number, because the mean of its divisors is an integer number (73329).

2¹⁹⁵⁵⁴² is an apocalyptic number.

195542 is a deficient number, since it is larger than the sum of its proper divisors (97774).

195542 is an equidigital number, since it uses as much as digits as its factorization.

195542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97773.

The product of its digits is 1800, while the sum is 26.

The square root of 195542 is about 442.2013116218. The cubic root of 195542 is about 58.0425767439.

It can be divided in two parts, 195 and 542, that added together give a palindrome (737).

The spelling of 195542 in words is "one hundred ninety-five thousand, five hundred forty-two".