129326851 has 4 divisors (see below), whose sum is σ = 130257400. Its totient is φ = 128396304.

The previous prime is 129326839. The next prime is 129326867. The reversal of 129326851 is 158623921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 129326851 - 2¹¹ = 129324803 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 129326851.

It is not an unprimeable number, because it can be changed into a prime (129326651) 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, 465066 + ... + 465343.

It is an arithmetic number, because the mean of its divisors is an integer number (32564350).

Almost surely, 2^129326851 is an apocalyptic number.

129326851 is a deficient number, since it is larger than the sum of its proper divisors (930549).

129326851 is an equidigital number, since it uses as much as digits as its factorization.

129326851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930548.

The product of its digits is 25920, while the sum is 37.

The square root of 129326851 is about 11372.1964017511. The cubic root of 129326851 is about 505.7038201180.

The spelling of 129326851 in words is "one hundred twenty-nine million, three hundred twenty-six thousand, eight hundred fifty-one".