135566429 has 2 divisors, whose sum is σ = 135566430. Its totient is φ = 135566428.

The previous prime is 135566423. The next prime is 135566467. The reversal of 135566429 is 924665531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73188025 + 62378404 = 8555^2 + 7898^2 .

It is an emirp because it is prime and its reverse (924665531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135566429 - 2⁴ = 135566413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135566423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67783214 + 67783215.

It is an arithmetic number, because the mean of its divisors is an integer number (67783215).

Almost surely, 2^135566429 is an apocalyptic number.

It is an amenable number.

135566429 is a deficient number, since it is larger than the sum of its proper divisors (1).

135566429 is an equidigital number, since it uses as much as digits as its factorization.

135566429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 41.

The square root of 135566429 is about 11643.2997470648. The cubic root of 135566429 is about 513.7092495348.

The spelling of 135566429 in words is "one hundred thirty-five million, five hundred sixty-six thousand, four hundred twenty-nine".