195123043 has 2 divisors, whose sum is σ = 195123044. Its totient is φ = 195123042.

The previous prime is 195123041. The next prime is 195123073. The reversal of 195123043 is 340321591.

It is a weak prime.

It is an emirp because it is prime and its reverse (340321591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195123043 - 2¹ = 195123041 is a prime.

Together with 195123041, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (195123041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97561521 + 97561522.

It is an arithmetic number, because the mean of its divisors is an integer number (97561522).

Almost surely, 2^195123043 is an apocalyptic number.

195123043 is a deficient number, since it is larger than the sum of its proper divisors (1).

195123043 is an equidigital number, since it uses as much as digits as its factorization.

195123043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 195123043 is about 13968.6449951311. The cubic root of 195123043 is about 580.0109421241.

The spelling of 195123043 in words is "one hundred ninety-five million, one hundred twenty-three thousand, forty-three".