422130305 has 4 divisors (see below), whose sum is σ = 506556372. Its totient is φ = 337704240.

The previous prime is 422130271. The next prime is 422130329. The reversal of 422130305 is 503031224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79584241 + 342546064 = 8921^2 + 18508^2 .

It is not a de Polignac number, because 422130305 - 2¹⁴ = 422113921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 42213026 + ... + 42213035.

It is an arithmetic number, because the mean of its divisors is an integer number (126639093).

Almost surely, 2^422130305 is an apocalyptic number.

It is an amenable number.

422130305 is a deficient number, since it is larger than the sum of its proper divisors (84426067).

422130305 is an equidigital number, since it uses as much as digits as its factorization.

422130305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84426066.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 422130305 is about 20545.8099134592. The cubic root of 422130305 is about 750.1512613431.

Adding to 422130305 its reverse (503031224), we get a palindrome (925161529).

The spelling of 422130305 in words is "four hundred twenty-two million, one hundred thirty thousand, three hundred five".