129304013 has 2 divisors, whose sum is σ = 129304014. Its totient is φ = 129304012.

The previous prime is 129304001. The next prime is 129304027. The reversal of 129304013 is 310403921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77492809 + 51811204 = 8803^2 + 7198^2 .

It is a cyclic number.

It is not a de Polignac number, because 129304013 - 2¹⁴ = 129287629 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 129304013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129304033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64652006 + 64652007.

It is an arithmetic number, because the mean of its divisors is an integer number (64652007).

Almost surely, 2^129304013 is an apocalyptic number.

It is an amenable number.

129304013 is a deficient number, since it is larger than the sum of its proper divisors (1).

129304013 is an equidigital number, since it uses as much as digits as its factorization.

129304013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 129304013 is about 11371.1922418012. The cubic root of 129304013 is about 505.6740507297.

Adding to 129304013 its reverse (310403921), we get a palindrome (439707934).

The spelling of 129304013 in words is "one hundred twenty-nine million, three hundred four thousand, thirteen".