129040757 has 2 divisors, whose sum is σ = 129040758. Its totient is φ = 129040756.

The previous prime is 129040753. The next prime is 129040777. The reversal of 129040757 is 757040921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81830116 + 47210641 = 9046^2 + 6871^2 .

It is a cyclic number.

It is not a de Polignac number, because 129040757 - 2² = 129040753 is a prime.

It is equal to p_7326872 and since 129040757 and 7326872 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129040753) 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, 64520378 + 64520379.

It is an arithmetic number, because the mean of its divisors is an integer number (64520379).

Almost surely, 2^129040757 is an apocalyptic number.

It is an amenable number.

129040757 is a deficient number, since it is larger than the sum of its proper divisors (1).

129040757 is an equidigital number, since it uses as much as digits as its factorization.

129040757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 129040757 is about 11359.6107767828. The cubic root of 129040757 is about 505.3306425347.

The spelling of 129040757 in words is "one hundred twenty-nine million, forty thousand, seven hundred fifty-seven".