129533205 has 16 divisors (see below), whose sum is σ = 207503424. Its totient is φ = 69000960.

The previous prime is 129533197. The next prime is 129533273. The reversal of 129533205 is 502335921.

It is not a de Polignac number, because 129533205 - 2³ = 129533197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8845 + ... + 18365.

It is an arithmetic number, because the mean of its divisors is an integer number (12968964).

Almost surely, 2^129533205 is an apocalyptic number.

129533205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

129533205 is a deficient number, since it is larger than the sum of its proper divisors (77970219).

129533205 is an equidigital number, since it uses as much as digits as its factorization.

129533205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10436.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 129533205 is about 11381.2655271723. The cubic root of 129533205 is about 505.9726442949.

The spelling of 129533205 in words is "one hundred twenty-nine million, five hundred thirty-three thousand, two hundred five".