123424013 has 2 divisors, whose sum is σ = 123424014. Its totient is φ = 123424012.

The previous prime is 123423967. The next prime is 123424027. The reversal of 123424013 is 310424321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123365449 + 58564 = 11107^2 + 242^2 .

It is an emirp because it is prime and its reverse (310424321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123424013 - 2¹⁴ = 123407629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123424813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61712006 + 61712007.

It is an arithmetic number, because the mean of its divisors is an integer number (61712007).

Almost surely, 2^123424013 is an apocalyptic number.

It is an amenable number.

123424013 is a deficient number, since it is larger than the sum of its proper divisors (1).

123424013 is an equidigital number, since it uses as much as digits as its factorization.

123424013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 123424013 is about 11109.6360426433. The cubic root of 123424013 is about 497.8897905612.

Adding to 123424013 its reverse (310424321), we get a palindrome (433848334).

The spelling of 123424013 in words is "one hundred twenty-three million, four hundred twenty-four thousand, thirteen".