129302441 has 2 divisors, whose sum is σ = 129302442. Its totient is φ = 129302440.

The previous prime is 129302423. The next prime is 129302443. The reversal of 129302441 is 144203921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121462441 + 7840000 = 11021^2 + 2800^2 .

It is a cyclic number.

It is not a de Polignac number, because 129302441 - 2¹⁴ = 129286057 is a prime.

Together with 129302443, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129302441.

It is not a weakly prime, because it can be changed into another prime (129302443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64651220 + 64651221.

It is an arithmetic number, because the mean of its divisors is an integer number (64651221).

Almost surely, 2^129302441 is an apocalyptic number.

It is an amenable number.

129302441 is a deficient number, since it is larger than the sum of its proper divisors (1).

129302441 is an equidigital number, since it uses as much as digits as its factorization.

129302441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 129302441 is about 11371.1231195516. The cubic root of 129302441 is about 505.6720014949.

The spelling of 129302441 in words is "one hundred twenty-nine million, three hundred two thousand, four hundred forty-one".