129534137 has 8 divisors (see below), whose sum is σ = 135366720. Its totient is φ = 123718320.

The previous prime is 129534133. The next prime is 129534157. The reversal of 129534137 is 731435921.

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

It is a cyclic number.

It is not a de Polignac number, because 129534137 - 2² = 129534133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129534097 and 129534106.

It is not an unprimeable number, because it can be changed into a prime (129534133) 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, 13187 + ... + 20807.

It is an arithmetic number, because the mean of its divisors is an integer number (16920840).

Almost surely, 2^129534137 is an apocalyptic number.

It is an amenable number.

129534137 is a deficient number, since it is larger than the sum of its proper divisors (5832583).

129534137 is an equidigital number, since it uses as much as digits as its factorization.

129534137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8383.

The product of its digits is 22680, while the sum is 35.

The square root of 129534137 is about 11381.3064715787. The cubic root of 129534137 is about 505.9738577942.

The spelling of 129534137 in words is "one hundred twenty-nine million, five hundred thirty-four thousand, one hundred thirty-seven".