123199123 has 2 divisors, whose sum is σ = 123199124. Its totient is φ = 123199122.

The previous prime is 123199117. The next prime is 123199133. The reversal of 123199123 is 321991321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123199123 - 2⁹ = 123198611 is a prime.

It is not a weakly prime, because it can be changed into another prime (123199133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61599561 + 61599562.

It is an arithmetic number, because the mean of its divisors is an integer number (61599562).

Almost surely, 2^123199123 is an apocalyptic number.

123199123 is a deficient number, since it is larger than the sum of its proper divisors (1).

123199123 is an equidigital number, since it uses as much as digits as its factorization.

123199123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 31.

The square root of 123199123 is about 11099.5100342312. The cubic root of 123199123 is about 497.5872062476.

The spelling of 123199123 in words is "one hundred twenty-three million, one hundred ninety-nine thousand, one hundred twenty-three".