129573911 has 2 divisors, whose sum is σ = 129573912. Its totient is φ = 129573910.

The previous prime is 129573841. The next prime is 129573929. The reversal of 129573911 is 119375921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129573911 - 2¹⁰ = 129572887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129573991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64786955 + 64786956.

It is an arithmetic number, because the mean of its divisors is an integer number (64786956).

Almost surely, 2^129573911 is an apocalyptic number.

129573911 is a deficient number, since it is larger than the sum of its proper divisors (1).

129573911 is an equidigital number, since it uses as much as digits as its factorization.

129573911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 38.

The square root of 129573911 is about 11383.0536764086. The cubic root of 129573911 is about 506.0256396263.

The spelling of 129573911 in words is "one hundred twenty-nine million, five hundred seventy-three thousand, nine hundred eleven".