422435421 has 6 divisors (see below), whose sum is σ = 610184510. Its totient is φ = 281623608.

The previous prime is 422435407. The next prime is 422435441. The reversal of 422435421 is 124534224.

It can be written as a sum of positive squares in only one way, i.e., 419840100 + 2595321 = 20490^2 + 1611^2 .

It is not a de Polignac number, because 422435421 - 2¹⁴ = 422419037 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422435441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23468626 + ... + 23468643.

Almost surely, 2^422435421 is an apocalyptic number.

It is an amenable number.

422435421 is a deficient number, since it is larger than the sum of its proper divisors (187749089).

422435421 is a wasteful number, since it uses less digits than its factorization.

422435421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46937275 (or 46937272 counting only the distinct ones).

The product of its digits is 7680, while the sum is 27.

The square root of 422435421 is about 20553.2338331465. The cubic root of 422435421 is about 750.3319543867.

Adding to 422435421 its reverse (124534224), we get a palindrome (546969645).

The spelling of 422435421 in words is "four hundred twenty-two million, four hundred thirty-five thousand, four hundred twenty-one".