13042423 has 2 divisors, whose sum is σ = 13042424. Its totient is φ = 13042422.

The previous prime is 13042409. The next prime is 13042429. The reversal of 13042423 is 32424031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13042423 - 2⁹ = 13041911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13042423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13042429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6521211 + 6521212.

It is an arithmetic number, because the mean of its divisors is an integer number (6521212).

Almost surely, 2^13042423 is an apocalyptic number.

13042423 is a deficient number, since it is larger than the sum of its proper divisors (1).

13042423 is an equidigital number, since it uses as much as digits as its factorization.

13042423 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 19.

The square root of 13042423 is about 3611.4294953661. The cubic root of 13042423 is about 235.3889620081.

Adding to 13042423 its reverse (32424031), we get a palindrome (45466454).

The spelling of 13042423 in words is "thirteen million, forty-two thousand, four hundred twenty-three".