490574129021 has 2 divisors, whose sum is σ = 490574129022. Its totient is φ = 490574129020.

The previous prime is 490574128903. The next prime is 490574129039. The reversal of 490574129021 is 120921475094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 431930241796 + 58643887225 = 657214^2 + 242165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490574129021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490574129041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245287064510 + 245287064511.

It is an arithmetic number, because the mean of its divisors is an integer number (245287064511).

Almost surely, 2^490574129021 is an apocalyptic number.

It is an amenable number.

490574129021 is a deficient number, since it is larger than the sum of its proper divisors (1).

490574129021 is an equidigital number, since it uses as much as digits as its factorization.

490574129021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 490574129021 in words is "four hundred ninety billion, five hundred seventy-four million, one hundred twenty-nine thousand, twenty-one".