206129207 has 2 divisors, whose sum is σ = 206129208. Its totient is φ = 206129206.

The previous prime is 206129191. The next prime is 206129227. The reversal of 206129207 is 702921602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206129207 - 2⁴ = 206129191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206129207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206129227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103064603 + 103064604.

It is an arithmetic number, because the mean of its divisors is an integer number (103064604).

Almost surely, 2^206129207 is an apocalyptic number.

206129207 is a deficient number, since it is larger than the sum of its proper divisors (1).

206129207 is an equidigital number, since it uses as much as digits as its factorization.

206129207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 206129207 is about 14357.2005279581. The cubic root of 206129207 is about 590.7175097183.

The spelling of 206129207 in words is "two hundred six million, one hundred twenty-nine thousand, two hundred seven".