195123 has 8 divisors (see below), whose sum is σ = 262288. Its totient is φ = 129024.

The previous prime is 195121. The next prime is 195127. The reversal of 195123 is 321591.

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

It is not a de Polignac number, because 195123 - 2¹ = 195121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 195123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195121) by changing a digit.

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, 411 + ... + 747.

It is an arithmetic number, because the mean of its divisors is an integer number (32786).

2¹⁹⁵¹²³ is an apocalyptic number.

195123 is a deficient number, since it is larger than the sum of its proper divisors (67165).

195123 is a wasteful number, since it uses less digits than its factorization.

195123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533.

The product of its digits is 270, while the sum is 21.

The square root of 195123 is about 441.7272914367. The cubic root of 195123 is about 58.0010899518.

The spelling of 195123 in words is "one hundred ninety-five thousand, one hundred twenty-three".