135500129 has 2 divisors, whose sum is σ = 135500130. Its totient is φ = 135500128.

The previous prime is 135500111. The next prime is 135500143. The reversal of 135500129 is 921005531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119683600 + 15816529 = 10940^2 + 3977^2 .

It is a cyclic number.

It is not a de Polignac number, because 135500129 - 2²⁴ = 118722913 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 135500098 and 135500107.

It is not a weakly prime, because it can be changed into another prime (135503129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67750064 + 67750065.

It is an arithmetic number, because the mean of its divisors is an integer number (67750065).

Almost surely, 2^135500129 is an apocalyptic number.

It is an amenable number.

135500129 is a deficient number, since it is larger than the sum of its proper divisors (1).

135500129 is an equidigital number, since it uses as much as digits as its factorization.

135500129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 135500129 is about 11640.4522678460. The cubic root of 135500129 is about 513.6254911460.

The spelling of 135500129 in words is "one hundred thirty-five million, five hundred thousand, one hundred twenty-nine".