129835441 has 2 divisors, whose sum is σ = 129835442. Its totient is φ = 129835440.

The previous prime is 129835421. The next prime is 129835451. The reversal of 129835441 is 144538921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118919025 + 10916416 = 10905^2 + 3304^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129835441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129835441.

It is not a weakly prime, because it can be changed into another prime (129835421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64917720 + 64917721.

It is an arithmetic number, because the mean of its divisors is an integer number (64917721).

Almost surely, 2^129835441 is an apocalyptic number.

It is an amenable number.

129835441 is a deficient number, since it is larger than the sum of its proper divisors (1).

129835441 is an equidigital number, since it uses as much as digits as its factorization.

129835441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

The square root of 129835441 is about 11394.5355763190. The cubic root of 129835441 is about 506.3658622991.

The spelling of 129835441 in words is "one hundred twenty-nine million, eight hundred thirty-five thousand, four hundred forty-one".