123042205193 has 2 divisors, whose sum is σ = 123042205194. Its totient is φ = 123042205192.

The previous prime is 123042205109. The next prime is 123042205211. The reversal of 123042205193 is 391502240321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95217296329 + 27824908864 = 308573^2 + 166808^2 .

It is an emirp because it is prime and its reverse (391502240321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123042205193 - 2¹⁸ = 123041943049 is a prime.

It is not a weakly prime, because it can be changed into another prime (123042204193) 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, 61521102596 + 61521102597.

It is an arithmetic number, because the mean of its divisors is an integer number (61521102597).

Almost surely, 2^123042205193 is an apocalyptic number.

It is an amenable number.

123042205193 is a deficient number, since it is larger than the sum of its proper divisors (1).

123042205193 is an equidigital number, since it uses as much as digits as its factorization.

123042205193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 123042205193 in words is "one hundred twenty-three billion, forty-two million, two hundred five thousand, one hundred ninety-three".