195421141 has 2 divisors, whose sum is σ = 195421142. Its totient is φ = 195421140.

The previous prime is 195421139. The next prime is 195421151. The reversal of 195421141 is 141124591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167806116 + 27615025 = 12954^2 + 5255^2 .

It is an emirp because it is prime and its reverse (141124591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195421141 - 2¹ = 195421139 is a prime.

Together with 195421139, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195421151) by changing a digit.

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 as a sum of consecutive naturals, namely, 97710570 + 97710571.

It is an arithmetic number, because the mean of its divisors is an integer number (97710571).

Almost surely, 2^195421141 is an apocalyptic number.

It is an amenable number.

195421141 is a deficient number, since it is larger than the sum of its proper divisors (1).

195421141 is an equidigital number, since it uses as much as digits as its factorization.

195421141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 28.

The square root of 195421141 is about 13979.3111775938. The cubic root of 195421141 is about 580.3061611900.

The spelling of 195421141 in words is "one hundred ninety-five million, four hundred twenty-one thousand, one hundred forty-one".