123116429 has 2 divisors, whose sum is σ = 123116430. Its totient is φ = 123116428.

The previous prime is 123116423. The next prime is 123116479. The reversal of 123116429 is 924611321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118156900 + 4959529 = 10870^2 + 2227^2 .

It is a cyclic number.

It is not a de Polignac number, because 123116429 - 2⁸ = 123116173 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 (123116423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61558214 + 61558215.

It is an arithmetic number, because the mean of its divisors is an integer number (61558215).

Almost surely, 2^123116429 is an apocalyptic number.

It is an amenable number.

123116429 is a deficient number, since it is larger than the sum of its proper divisors (1).

123116429 is an equidigital number, since it uses as much as digits as its factorization.

123116429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 29.

The square root of 123116429 is about 11095.7842895399. The cubic root of 123116429 is about 497.4758507844.

The spelling of 123116429 in words is "one hundred twenty-three million, one hundred sixteen thousand, four hundred twenty-nine".