135646129 has 2 divisors, whose sum is σ = 135646130. Its totient is φ = 135646128.

The previous prime is 135646103. The next prime is 135646141. The reversal of 135646129 is 921646531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104509729 + 31136400 = 10223^2 + 5580^2 .

It is a cyclic number.

It is not a de Polignac number, because 135646129 - 2⁵ = 135646097 is a prime.

It is not a weakly prime, because it can be changed into another prime (135646229) 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, 67823064 + 67823065.

It is an arithmetic number, because the mean of its divisors is an integer number (67823065).

Almost surely, 2^135646129 is an apocalyptic number.

It is an amenable number.

135646129 is a deficient number, since it is larger than the sum of its proper divisors (1).

135646129 is an equidigital number, since it uses as much as digits as its factorization.

135646129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 135646129 is about 11646.7218134546. The cubic root of 135646129 is about 513.8099003294.

The spelling of 135646129 in words is "one hundred thirty-five million, six hundred forty-six thousand, one hundred twenty-nine".