135372729 has 16 divisors (see below), whose sum is σ = 186171392. Its totient is φ = 87445008.

The previous prime is 135372661. The next prime is 135372749. The reversal of 135372729 is 927273531.

135372729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 135372729 - 2⁹ = 135372217 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135372749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12252 + ... + 20514.

It is an arithmetic number, because the mean of its divisors is an integer number (11635712).

Almost surely, 2^135372729 is an apocalyptic number.

It is an amenable number.

135372729 is a deficient number, since it is larger than the sum of its proper divisors (50798663).

135372729 is a wasteful number, since it uses less digits than its factorization.

135372729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8436.

The product of its digits is 79380, while the sum is 39.

The square root of 135372729 is about 11634.9786849826. The cubic root of 135372729 is about 513.4644669294.

The spelling of 135372729 in words is "one hundred thirty-five million, three hundred seventy-two thousand, seven hundred twenty-nine".