195142523 has 2 divisors, whose sum is σ = 195142524. Its totient is φ = 195142522.

The previous prime is 195142513. The next prime is 195142529. The reversal of 195142523 is 325241591.

It is a strong prime.

It is an emirp because it is prime and its reverse (325241591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195142523 - 2⁸ = 195142267 is a prime.

It is a super-3 number, since 3×195142523³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 195142523.

It is not a weakly prime, because it can be changed into another prime (195142529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97571261 + 97571262.

It is an arithmetic number, because the mean of its divisors is an integer number (97571262).

Almost surely, 2^195142523 is an apocalyptic number.

195142523 is a deficient number, since it is larger than the sum of its proper divisors (1).

195142523 is an equidigital number, since it uses as much as digits as its factorization.

195142523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 32.

The square root of 195142523 is about 13969.3422536639. The cubic root of 195142523 is about 580.0302431713.

The spelling of 195142523 in words is "one hundred ninety-five million, one hundred forty-two thousand, five hundred twenty-three".