422291 has 2 divisors, whose sum is σ = 422292. Its totient is φ = 422290.

The previous prime is 422287. The next prime is 422309. The reversal of 422291 is 192224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 422291 - 2² = 422287 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (422231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211145 + 211146.

It is an arithmetic number, because the mean of its divisors is an integer number (211146).

2⁴²²²⁹¹ is an apocalyptic number.

422291 is a deficient number, since it is larger than the sum of its proper divisors (1).

422291 is an equidigital number, since it uses as much as digits as its factorization.

422291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 20.

The square root of 422291 is about 649.8392108822. The cubic root of 422291 is about 75.0246437534.

The spelling of 422291 in words is "four hundred twenty-two thousand, two hundred ninety-one".