129764573 has 2 divisors, whose sum is σ = 129764574. Its totient is φ = 129764572.

The previous prime is 129764561. The next prime is 129764599. The reversal of 129764573 is 375467921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103774969 + 25989604 = 10187^2 + 5098^2 .

It is a cyclic number.

It is not a de Polignac number, because 129764573 - 2⁸ = 129764317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129764533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64882286 + 64882287.

It is an arithmetic number, because the mean of its divisors is an integer number (64882287).

Almost surely, 2^129764573 is an apocalyptic number.

It is an amenable number.

129764573 is a deficient number, since it is larger than the sum of its proper divisors (1).

129764573 is an equidigital number, since it uses as much as digits as its factorization.

129764573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 44.

The square root of 129764573 is about 11391.4254156361. The cubic root of 129764573 is about 506.2737157411.

The spelling of 129764573 in words is "one hundred twenty-nine million, seven hundred sixty-four thousand, five hundred seventy-three".