197290123 has 2 divisors, whose sum is σ = 197290124. Its totient is φ = 197290122.

The previous prime is 197290081. The next prime is 197290133. The reversal of 197290123 is 321092791.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197290123 - 2²¹ = 195192971 is a prime.

It is not a weakly prime, because it can be changed into another prime (197290133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98645061 + 98645062.

It is an arithmetic number, because the mean of its divisors is an integer number (98645062).

Almost surely, 2^197290123 is an apocalyptic number.

197290123 is a deficient number, since it is larger than the sum of its proper divisors (1).

197290123 is an equidigital number, since it uses as much as digits as its factorization.

197290123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 197290123 is about 14046.0002491813. Note that the first 3 decimals coincide. The cubic root of 197290123 is about 582.1502851506.

The spelling of 197290123 in words is "one hundred ninety-seven million, two hundred ninety thousand, one hundred twenty-three".