129722759 has 2 divisors, whose sum is σ = 129722760. Its totient is φ = 129722758.

The previous prime is 129722731. The next prime is 129722779. The reversal of 129722759 is 957227921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129722759 - 2¹⁶ = 129657223 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129722779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64861379 + 64861380.

It is an arithmetic number, because the mean of its divisors is an integer number (64861380).

Almost surely, 2^129722759 is an apocalyptic number.

129722759 is a deficient number, since it is larger than the sum of its proper divisors (1).

129722759 is an equidigital number, since it uses as much as digits as its factorization.

129722759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 158760, while the sum is 44.

The square root of 129722759 is about 11389.5899399408. The cubic root of 129722759 is about 506.2193310893.

The spelling of 129722759 in words is "one hundred twenty-nine million, seven hundred twenty-two thousand, seven hundred fifty-nine".