129832901 has 4 divisors (see below), whose sum is σ = 141635904. Its totient is φ = 118029900.

The previous prime is 129832897. The next prime is 129832919. The reversal of 129832901 is 109238921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 129832901 - 2² = 129832897 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129892901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5901485 + ... + 5901506.

It is an arithmetic number, because the mean of its divisors is an integer number (35408976).

Almost surely, 2^129832901 is an apocalyptic number.

129832901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

129832901 is a deficient number, since it is larger than the sum of its proper divisors (11803003).

129832901 is a wasteful number, since it uses less digits than its factorization.

129832901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11803002.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 129832901 is about 11394.4241188399. The cubic root of 129832901 is about 506.3625602277.

The spelling of 129832901 in words is "one hundred twenty-nine million, eight hundred thirty-two thousand, nine hundred one".