129040585 has 8 divisors (see below), whose sum is σ = 154910016. Its totient is φ = 103191600.

The previous prime is 129040579. The next prime is 129040601. The reversal of 129040585 is 585040921.

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

It is not a de Polignac number, because 129040585 - 2³ = 129040577 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 129040585.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20010 + ... + 25660.

It is an arithmetic number, because the mean of its divisors is an integer number (19363752).

Almost surely, 2^129040585 is an apocalyptic number.

It is an amenable number.

129040585 is a deficient number, since it is larger than the sum of its proper divisors (25869431).

129040585 is an equidigital number, since it uses as much as digits as its factorization.

129040585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10223.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 129040585 is about 11359.6032060984. The cubic root of 129040585 is about 505.3304180142.

The spelling of 129040585 in words is "one hundred twenty-nine million, forty thousand, five hundred eighty-five".