135545128 has 8 divisors (see below), whose sum is σ = 254147130. Its totient is φ = 67772560.

The previous prime is 135545099. The next prime is 135545129. The reversal of 135545128 is 821545531.

It can be written as a sum of positive squares in only one way, i.e., 97574884 + 37970244 = 9878^2 + 6162^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 135545093 and 135545102.

It is not an unprimeable number, because it can be changed into a prime (135545129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8471563 + ... + 8471578.

Almost surely, 2^135545128 is an apocalyptic number.

It is an amenable number.

135545128 is a deficient number, since it is larger than the sum of its proper divisors (118602002).

135545128 is a wasteful number, since it uses less digits than its factorization.

135545128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16943147 (or 16943143 counting only the distinct ones).

The product of its digits is 24000, while the sum is 34.

The square root of 135545128 is about 11642.3849790324. The cubic root of 135545128 is about 513.6823424459.

The spelling of 135545128 in words is "one hundred thirty-five million, five hundred forty-five thousand, one hundred twenty-eight".