129345157 has 2 divisors, whose sum is σ = 129345158. Its totient is φ = 129345156.

The previous prime is 129345137. The next prime is 129345253. The reversal of 129345157 is 751543921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129185956 + 159201 = 11366^2 + 399^2 .

It is a cyclic number.

It is not a de Polignac number, because 129345157 - 2¹⁹ = 128820869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129345107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64672578 + 64672579.

It is an arithmetic number, because the mean of its divisors is an integer number (64672579).

Almost surely, 2^129345157 is an apocalyptic number.

It is an amenable number.

129345157 is a deficient number, since it is larger than the sum of its proper divisors (1).

129345157 is an equidigital number, since it uses as much as digits as its factorization.

129345157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 37.

The square root of 129345157 is about 11373.0012309856. The cubic root of 129345157 is about 505.7276795030.

The spelling of 129345157 in words is "one hundred twenty-nine million, three hundred forty-five thousand, one hundred fifty-seven".