135660128 has 12 divisors (see below), whose sum is σ = 267080940. Its totient is φ = 67830048.

The previous prime is 135660127. The next prime is 135660131. The reversal of 135660128 is 821066531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 4239379 = 135660128 / (1 + 3 + 5 + 6 + 6 + 0 + 1 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 135660094 and 135660103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135660121) 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, 2119658 + ... + 2119721.

It is an arithmetic number, because the mean of its divisors is an integer number (22256745).

Almost surely, 2^135660128 is an apocalyptic number.

It is an amenable number.

135660128 is a deficient number, since it is larger than the sum of its proper divisors (131420812).

135660128 is an equidigital number, since it uses as much as digits as its factorization.

135660128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4239389 (or 4239381 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 135660128 is about 11647.3227825110. The cubic root of 135660128 is about 513.8275751853.

The spelling of 135660128 in words is "one hundred thirty-five million, six hundred sixty thousand, one hundred twenty-eight".