129304027 has 2 divisors, whose sum is σ = 129304028. Its totient is φ = 129304026.

The previous prime is 129304013. The next prime is 129304033. The reversal of 129304027 is 720403921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129304027 - 2⁷ = 129303899 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 129303986 and 129304004.

It is not a weakly prime, because it can be changed into another prime (129304727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64652013 + 64652014.

It is an arithmetic number, because the mean of its divisors is an integer number (64652014).

Almost surely, 2^129304027 is an apocalyptic number.

129304027 is a deficient number, since it is larger than the sum of its proper divisors (1).

129304027 is an equidigital number, since it uses as much as digits as its factorization.

129304027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 129304027 is about 11371.1928573919. The cubic root of 129304027 is about 505.6740689798.

Adding to 129304027 its reverse (720403921), we get a palindrome (849707948).

It can be divided in two parts, 12 and 9304027, that added together give a palindrome (9304039).

The spelling of 129304027 in words is "one hundred twenty-nine million, three hundred four thousand, twenty-seven".