135428559 has 8 divisors (see below), whose sum is σ = 206367360. Its totient is φ = 77387736.

The previous prime is 135428551. The next prime is 135428563. The reversal of 135428559 is 955824531.

135428559 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135428559 - 2³ = 135428551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135428559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135428551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3224469 + ... + 3224510.

It is an arithmetic number, because the mean of its divisors is an integer number (25795920).

Almost surely, 2^135428559 is an apocalyptic number.

135428559 is a deficient number, since it is larger than the sum of its proper divisors (70938801).

135428559 is an equidigital number, since it uses as much as digits as its factorization.

135428559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6448989.

The product of its digits is 216000, while the sum is 42.

The square root of 135428559 is about 11637.3776685300. The cubic root of 135428559 is about 513.5350443676.

The spelling of 135428559 in words is "one hundred thirty-five million, four hundred twenty-eight thousand, five hundred fifty-nine".