123430199 has 2 divisors, whose sum is σ = 123430200. Its totient is φ = 123430198.

The previous prime is 123430169. The next prime is 123430243. The reversal of 123430199 is 991034321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123430199 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123430129) 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, 61715099 + 61715100.

It is an arithmetic number, because the mean of its divisors is an integer number (61715100).

Almost surely, 2^123430199 is an apocalyptic number.

123430199 is a deficient number, since it is larger than the sum of its proper divisors (1).

123430199 is an equidigital number, since it uses as much as digits as its factorization.

123430199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 123430199 is about 11109.9144461152. The cubic root of 123430199 is about 497.8981084855.

The spelling of 123430199 in words is "one hundred twenty-three million, four hundred thirty thousand, one hundred ninety-nine".