123596129 has 2 divisors, whose sum is σ = 123596130. Its totient is φ = 123596128.

The previous prime is 123596063. The next prime is 123596131. The reversal of 123596129 is 921695321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89397025 + 34199104 = 9455^2 + 5848^2 .

It is a cyclic number.

It is not a de Polignac number, because 123596129 - 2¹⁶ = 123530593 is a prime.

Together with 123596131, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 123596092 and 123596101.

It is not a weakly prime, because it can be changed into another prime (123596149) 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, 61798064 + 61798065.

It is an arithmetic number, because the mean of its divisors is an integer number (61798065).

Almost surely, 2^123596129 is an apocalyptic number.

It is an amenable number.

123596129 is a deficient number, since it is larger than the sum of its proper divisors (1).

123596129 is an equidigital number, since it uses as much as digits as its factorization.

123596129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 38.

The square root of 123596129 is about 11117.3795923320. The cubic root of 123596129 is about 498.1211204671.

The spelling of 123596129 in words is "one hundred twenty-three million, five hundred ninety-six thousand, one hundred twenty-nine".