129601253 has 2 divisors, whose sum is σ = 129601254. Its totient is φ = 129601252.

The previous prime is 129601201. The next prime is 129601259. The reversal of 129601253 is 352106921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73994404 + 55606849 = 8602^2 + 7457^2 .

It is a cyclic number.

It is not a de Polignac number, because 129601253 - 2⁶ = 129601189 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129601259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64800626 + 64800627.

It is an arithmetic number, because the mean of its divisors is an integer number (64800627).

Almost surely, 2^129601253 is an apocalyptic number.

It is an amenable number.

129601253 is a deficient number, since it is larger than the sum of its proper divisors (1).

129601253 is an equidigital number, since it uses as much as digits as its factorization.

129601253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 129601253 is about 11384.2546088885. The cubic root of 129601253 is about 506.0612300726.

The spelling of 129601253 in words is "one hundred twenty-nine million, six hundred one thousand, two hundred fifty-three".