422845281 has 6 divisors (see below), whose sum is σ = 610776530. Its totient is φ = 281896848.

The previous prime is 422845279. The next prime is 422845321. The reversal of 422845281 is 182548224.

It can be written as a sum of positive squares in only one way, i.e., 330512400 + 92332881 = 18180^2 + 9609^2 .

It is not a de Polignac number, because 422845281 - 2¹ = 422845279 is a prime.

It is a super-2 number, since 2×422845281² = 357596263327937922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (422845231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23491396 + ... + 23491413.

Almost surely, 2^422845281 is an apocalyptic number.

It is an amenable number.

422845281 is a deficient number, since it is larger than the sum of its proper divisors (187931249).

422845281 is a wasteful number, since it uses less digits than its factorization.

422845281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46982815 (or 46982812 counting only the distinct ones).

The product of its digits is 40960, while the sum is 36.

The square root of 422845281 is about 20563.2021095937. The cubic root of 422845281 is about 750.5745410910.

The spelling of 422845281 in words is "four hundred twenty-two million, eight hundred forty-five thousand, two hundred eighty-one".