492721376129 has 2 divisors, whose sum is σ = 492721376130. Its totient is φ = 492721376128.

The previous prime is 492721376123. The next prime is 492721376159. The reversal of 492721376129 is 921673127294.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 419291215729 + 73430160400 = 647527^2 + 270980^2 .

It is a cyclic number.

It is not a de Polignac number, because 492721376129 - 2⁸ = 492721375873 is a prime.

It is not a weakly prime, because it can be changed into another prime (492721376123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246360688064 + 246360688065.

It is an arithmetic number, because the mean of its divisors is an integer number (246360688065).

Almost surely, 2^492721376129 is an apocalyptic number.

It is an amenable number.

492721376129 is a deficient number, since it is larger than the sum of its proper divisors (1).

492721376129 is an equidigital number, since it uses as much as digits as its factorization.

492721376129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 53.

The spelling of 492721376129 in words is "four hundred ninety-two billion, seven hundred twenty-one million, three hundred seventy-six thousand, one hundred twenty-nine".