5120129257 has 2 divisors, whose sum is σ = 5120129258. Its totient is φ = 5120129256.

The previous prime is 5120129243. The next prime is 5120129269. The reversal of 5120129257 is 7529210215.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4160121001 + 960008256 = 64499^2 + 30984^2 .

It is a cyclic number.

It is not a de Polignac number, because 5120129257 - 2¹⁹ = 5119604969 is a prime.

It is not a weakly prime, because it can be changed into another prime (5120129297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2560064628 + 2560064629.

It is an arithmetic number, because the mean of its divisors is an integer number (2560064629).

Almost surely, 2^5120129257 is an apocalyptic number.

It is an amenable number.

5120129257 is a deficient number, since it is larger than the sum of its proper divisors (1).

5120129257 is an equidigital number, since it uses as much as digits as its factorization.

5120129257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 5120129257 is about 71555.0784850384. The cubic root of 5120129257 is about 1723.5622558495.

The spelling of 5120129257 in words is "five billion, one hundred twenty million, one hundred twenty-nine thousand, two hundred fifty-seven".