129537706 has 8 divisors (see below), whose sum is σ = 204533280. Its totient is φ = 61359948.

The previous prime is 129537701. The next prime is 129537719. The reversal of 129537706 is 607735921.

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

It is not an unprimeable number, because it can be changed into a prime (129537701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1704406 + ... + 1704481.

It is an arithmetic number, because the mean of its divisors is an integer number (25566660).

Almost surely, 2^129537706 is an apocalyptic number.

129537706 is a deficient number, since it is larger than the sum of its proper divisors (74995574).

129537706 is a wasteful number, since it uses less digits than its factorization.

129537706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3408908.

The product of its (nonzero) digits is 79380, while the sum is 40.

The square root of 129537706 is about 11381.4632626917. The cubic root of 129537706 is about 505.9785047137.

The spelling of 129537706 in words is "one hundred twenty-nine million, five hundred thirty-seven thousand, seven hundred six".