135828129 has 4 divisors (see below), whose sum is σ = 181104176. Its totient is φ = 90552084.

The previous prime is 135828127. The next prime is 135828157. The reversal of 135828129 is 921828531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 135828129 - 2¹ = 135828127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135828127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22638019 + ... + 22638024.

It is an arithmetic number, because the mean of its divisors is an integer number (45276044).

Almost surely, 2^135828129 is an apocalyptic number.

It is an amenable number.

135828129 is a deficient number, since it is larger than the sum of its proper divisors (45276047).

135828129 is an equidigital number, since it uses as much as digits as its factorization.

135828129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45276046.

The product of its digits is 34560, while the sum is 39.

The square root of 135828129 is about 11654.5325517586. The cubic root of 135828129 is about 514.0395950764.

The spelling of 135828129 in words is "one hundred thirty-five million, eight hundred twenty-eight thousand, one hundred twenty-nine".