129835321 has 8 divisors (see below), whose sum is σ = 161872704. Its totient is φ = 101170320.

The previous prime is 129835297. The next prime is 129835333. The reversal of 129835321 is 123538921.

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 129835321 - 2¹³ = 129827129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129835421) 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, 843010 + ... + 843163.

It is an arithmetic number, because the mean of its divisors is an integer number (20234088).

Almost surely, 2^129835321 is an apocalyptic number.

129835321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

129835321 is a deficient number, since it is larger than the sum of its proper divisors (32037383).

129835321 is a wasteful number, since it uses less digits than its factorization.

129835321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686191.

The product of its digits is 12960, while the sum is 34.

The square root of 129835321 is about 11394.5303106359. The cubic root of 129835321 is about 506.3657062966.

The spelling of 129835321 in words is "one hundred twenty-nine million, eight hundred thirty-five thousand, three hundred twenty-one".