422290 has 24 divisors (see below), whose sum is σ = 837900. Its totient is φ = 153120.

The previous prime is 422287. The next prime is 422291. The reversal of 422290 is 92224.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 421201 + 1089 = 649^2 + 33^2 .

It is not an unprimeable number, because it can be changed into a prime (422291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1036 + ... + 1384.

2⁴²²²⁹⁰ is an apocalyptic number.

422290 is a deficient number, since it is larger than the sum of its proper divisors (415610).

422290 is a wasteful number, since it uses less digits than its factorization.

422290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 422290 is about 649.8384414606. The cubic root of 422290 is about 75.0245845331.

It can be divided in two parts, 42 and 2290, that added together give a palindrome (2332).

The spelling of 422290 in words is "four hundred twenty-two thousand, two hundred ninety".