129245206 has 16 divisors (see below), whose sum is σ = 198397440. Its totient is φ = 63118440.

The previous prime is 129245191. The next prime is 129245261. The reversal of 129245206 is 602542921.

It is a congruent number.

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, 58225 + ... + 60403.

It is an arithmetic number, because the mean of its divisors is an integer number (12399840).

Almost surely, 2^129245206 is an apocalyptic number.

129245206 is a deficient number, since it is larger than the sum of its proper divisors (69152234).

129245206 is a wasteful number, since it uses less digits than its factorization.

129245206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 129245206 is about 11368.6061590680. The cubic root of 129245206 is about 505.5973795255.

The spelling of 129245206 in words is "one hundred twenty-nine million, two hundred forty-five thousand, two hundred six".