500420125729 has 2 divisors, whose sum is σ = 500420125730. Its totient is φ = 500420125728.

The previous prime is 500420125697. The next prime is 500420125753. The reversal of 500420125729 is 927521024005.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 497374741504 + 3045384225 = 705248^2 + 55185^2 .

It is a cyclic number.

It is not a de Polignac number, because 500420125729 - 2⁵ = 500420125697 is a prime.

It is not a weakly prime, because it can be changed into another prime (500420125789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250210062864 + 250210062865.

It is an arithmetic number, because the mean of its divisors is an integer number (250210062865).

Almost surely, 2^500420125729 is an apocalyptic number.

It is an amenable number.

500420125729 is a deficient number, since it is larger than the sum of its proper divisors (1).

500420125729 is an equidigital number, since it uses as much as digits as its factorization.

500420125729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 37.

The spelling of 500420125729 in words is "five hundred billion, four hundred twenty million, one hundred twenty-five thousand, seven hundred twenty-nine".