129041347 has 2 divisors, whose sum is σ = 129041348. Its totient is φ = 129041346.

The previous prime is 129041333. The next prime is 129041357. The reversal of 129041347 is 743140921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129041347 is a prime.

It is a Chen prime.

It is equal to p_7326904 and since 129041347 and 7326904 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (129041357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64520673 + 64520674.

It is an arithmetic number, because the mean of its divisors is an integer number (64520674).

Almost surely, 2^129041347 is an apocalyptic number.

129041347 is a deficient number, since it is larger than the sum of its proper divisors (1).

129041347 is an equidigital number, since it uses as much as digits as its factorization.

129041347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 129041347 is about 11359.6367459528. The cubic root of 129041347 is about 505.3314126909.

The spelling of 129041347 in words is "one hundred twenty-nine million, forty-one thousand, three hundred forty-seven".