422281 has 8 divisors (see below), whose sum is σ = 441864. Its totient is φ = 403200.

The previous prime is 422267. The next prime is 422287. The reversal of 422281 is 182224.

422281 = 459² + 460².

It can be written as a sum of positive squares in 4 ways, for example, as 129600 + 292681 = 360^2 + 541^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 422281 - 2⁵ = 422249 is a prime.

It is a super-2 number, since 2×422281² = 356642485922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3681 + ... + 3793.

It is an arithmetic number, because the mean of its divisors is an integer number (55233).

2⁴²²²⁸¹ is an apocalyptic number.

422281 is the 460-th centered square number.

It is an amenable number.

422281 is a deficient number, since it is larger than the sum of its proper divisors (19583).

422281 is a wasteful number, since it uses less digits than its factorization.

422281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251.

The product of its digits is 256, while the sum is 19.

The square root of 422281 is about 649.8315166257. The cubic root of 422281 is about 75.0240515454.

It can be divided in two parts, 422 and 281, that added together give a triangular number (703 = T₃₇).

The spelling of 422281 in words is "four hundred twenty-two thousand, two hundred eighty-one".