129066239 has 2 divisors, whose sum is σ = 129066240. Its totient is φ = 129066238.

The previous prime is 129066209. The next prime is 129066253. The reversal of 129066239 is 932660921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129066239 - 2⁸ = 129065983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129066209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64533119 + 64533120.

It is an arithmetic number, because the mean of its divisors is an integer number (64533120).

Almost surely, 2^129066239 is an apocalyptic number.

129066239 is a deficient number, since it is larger than the sum of its proper divisors (1).

129066239 is an equidigital number, since it uses as much as digits as its factorization.

129066239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 129066239 is about 11360.7323267473. The cubic root of 129066239 is about 505.3639033127.

The spelling of 129066239 in words is "one hundred twenty-nine million, sixty-six thousand, two hundred thirty-nine".