136407129 has 16 divisors (see below), whose sum is σ = 183643200. Its totient is φ = 90059456.

The previous prime is 136407121. The next prime is 136407149. The reversal of 136407129 is 921704631.

It is a cyclic number.

It is not a de Polignac number, because 136407129 - 2³ = 136407121 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 136407129.

It is not an unprimeable number, because it can be changed into a prime (136407121) 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, 208567 + ... + 209219.

It is an arithmetic number, because the mean of its divisors is an integer number (11477700).

Almost surely, 2^136407129 is an apocalyptic number.

It is an amenable number.

136407129 is a deficient number, since it is larger than the sum of its proper divisors (47236071).

136407129 is a wasteful number, since it uses less digits than its factorization.

136407129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 136407129 is about 11679.3462573896. The cubic root of 136407129 is about 514.7689654003.

The spelling of 136407129 in words is "one hundred thirty-six million, four hundred seven thousand, one hundred twenty-nine".