129274193 has 2 divisors, whose sum is σ = 129274194. Its totient is φ = 129274192.

The previous prime is 129274177. The next prime is 129274207. The reversal of 129274193 is 391472921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126607504 + 2666689 = 11252^2 + 1633^2 .

It is a cyclic number.

It is not a de Polignac number, because 129274193 - 2⁴ = 129274177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_7339367 and since 129274193 and 7339367 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (129274153) 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, 64637096 + 64637097.

It is an arithmetic number, because the mean of its divisors is an integer number (64637097).

Almost surely, 2^129274193 is an apocalyptic number.

It is an amenable number.

129274193 is a deficient number, since it is larger than the sum of its proper divisors (1).

129274193 is an equidigital number, since it uses as much as digits as its factorization.

129274193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 129274193 is about 11369.8809580400. The cubic root of 129274193 is about 505.6351750104.

The spelling of 129274193 in words is "one hundred twenty-nine million, two hundred seventy-four thousand, one hundred ninety-three".