428549875241 has 2 divisors, whose sum is σ = 428549875242. Its totient is φ = 428549875240.

The previous prime is 428549875231. The next prime is 428549875261. The reversal of 428549875241 is 142578945824.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297056610841 + 131493264400 = 545029^2 + 362620^2 .

It is a cyclic number.

It is not a de Polignac number, because 428549875241 - 2¹⁰ = 428549874217 is a prime.

It is not a weakly prime, because it can be changed into another prime (428549875211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214274937620 + 214274937621.

It is an arithmetic number, because the mean of its divisors is an integer number (214274937621).

Almost surely, 2^428549875241 is an apocalyptic number.

It is an amenable number.

428549875241 is a deficient number, since it is larger than the sum of its proper divisors (1).

428549875241 is an equidigital number, since it uses as much as digits as its factorization.

428549875241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25804800, while the sum is 59.

The spelling of 428549875241 in words is "four hundred twenty-eight billion, five hundred forty-nine million, eight hundred seventy-five thousand, two hundred forty-one".