422881 has 2 divisors, whose sum is σ = 422882. Its totient is φ = 422880.

The previous prime is 422879. The next prime is 422893. The reversal of 422881 is 188224.

422881 is nontrivially palindromic in base 8.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342225 + 80656 = 585^2 + 284^2 .

It is a cyclic number.

It is not a de Polignac number, because 422881 - 2¹ = 422879 is a prime.

It is a super-2 number, since 2×422881² = 357656680322, which contains 22 as substring.

Together with 422879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (422861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211440 + 211441.

It is an arithmetic number, because the mean of its divisors is an integer number (211441).

2⁴²²⁸⁸¹ is an apocalyptic number.

It is an amenable number.

422881 is a deficient number, since it is larger than the sum of its proper divisors (1).

422881 is an equidigital number, since it uses as much as digits as its factorization.

422881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1024, while the sum is 25.

The square root of 422881 is about 650.2930108805. The cubic root of 422881 is about 75.0595674918.

The spelling of 422881 in words is "four hundred twenty-two thousand, eight hundred eighty-one".