129241589 has 2 divisors, whose sum is σ = 129241590. Its totient is φ = 129241588.

The previous prime is 129241549. The next prime is 129241597. The reversal of 129241589 is 985142921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128640964 + 600625 = 11342^2 + 775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129241589 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 (129241529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64620794 + 64620795.

It is an arithmetic number, because the mean of its divisors is an integer number (64620795).

Almost surely, 2^129241589 is an apocalyptic number.

It is an amenable number.

129241589 is a deficient number, since it is larger than the sum of its proper divisors (1).

129241589 is an equidigital number, since it uses as much as digits as its factorization.

129241589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 41.

The square root of 129241589 is about 11368.4470795267. The cubic root of 129241589 is about 505.5926630055.

The spelling of 129241589 in words is "one hundred twenty-nine million, two hundred forty-one thousand, five hundred eighty-nine".