123424429 has 2 divisors, whose sum is σ = 123424430. Its totient is φ = 123424428.

The previous prime is 123424373. The next prime is 123424447. The reversal of 123424429 is 924424321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117288900 + 6135529 = 10830^2 + 2477^2 .

It is a cyclic number.

It is not a de Polignac number, because 123424429 - 2⁹ = 123423917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123424429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123424459) 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, 61712214 + 61712215.

It is an arithmetic number, because the mean of its divisors is an integer number (61712215).

Almost surely, 2^123424429 is an apocalyptic number.

It is an amenable number.

123424429 is a deficient number, since it is larger than the sum of its proper divisors (1).

123424429 is an equidigital number, since it uses as much as digits as its factorization.

123424429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 31.

The square root of 123424429 is about 11109.6547651131. The cubic root of 123424429 is about 497.8903499389.

The spelling of 123424429 in words is "one hundred twenty-three million, four hundred twenty-four thousand, four hundred twenty-nine".