123344729 has 2 divisors, whose sum is σ = 123344730. Its totient is φ = 123344728.

The previous prime is 123344719. The next prime is 123344737. The reversal of 123344729 is 927443321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69689104 + 53655625 = 8348^2 + 7325^2 .

It is a cyclic number.

It is not a de Polignac number, because 123344729 - 2¹⁶ = 123279193 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (123344719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61672364 + 61672365.

It is an arithmetic number, because the mean of its divisors is an integer number (61672365).

Almost surely, 2^123344729 is an apocalyptic number.

It is an amenable number.

123344729 is a deficient number, since it is larger than the sum of its proper divisors (1).

123344729 is an equidigital number, since it uses as much as digits as its factorization.

123344729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 35.

The square root of 123344729 is about 11106.0672157159. The cubic root of 123344729 is about 497.7831577468.

The spelling of 123344729 in words is "one hundred twenty-three million, three hundred forty-four thousand, seven hundred twenty-nine".