129008245 has 8 divisors (see below), whose sum is σ = 155162016. Its totient is φ = 102971856.

The previous prime is 129008183. The next prime is 129008261. The reversal of 129008245 is 542800921.

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 129008245 - 2²¹ = 126911093 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 26907 + ... + 31336.

It is an arithmetic number, because the mean of its divisors is an integer number (19395252).

Almost surely, 2^129008245 is an apocalyptic number.

It is an amenable number.

129008245 is a deficient number, since it is larger than the sum of its proper divisors (26153771).

129008245 is an equidigital number, since it uses as much as digits as its factorization.

129008245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58691.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 129008245 is about 11358.1796516871. The cubic root of 129008245 is about 505.2881993816.

The spelling of 129008245 in words is "one hundred twenty-nine million, eight thousand, two hundred forty-five".