129063761 has 2 divisors, whose sum is σ = 129063762. Its totient is φ = 129063760.

The previous prime is 129063749. The next prime is 129063763. The reversal of 129063761 is 167360921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129049600 + 14161 = 11360^2 + 119^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129063761 is a prime.

Together with 129063763, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (129063763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64531880 + 64531881.

It is an arithmetic number, because the mean of its divisors is an integer number (64531881).

Almost surely, 2^129063761 is an apocalyptic number.

It is an amenable number.

129063761 is a deficient number, since it is larger than the sum of its proper divisors (1).

129063761 is an equidigital number, since it uses as much as digits as its factorization.

129063761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 129063761 is about 11360.6232663530. The cubic root of 129063761 is about 505.3606690568.

The spelling of 129063761 in words is "one hundred twenty-nine million, sixty-three thousand, seven hundred sixty-one".