422145424 has 20 divisors (see below), whose sum is σ = 833340636. Its totient is φ = 207089792.

The previous prime is 422145421. The next prime is 422145443. The reversal of 422145424 is 424541224.

It can be written as a sum of positive squares in 2 ways, for example, as 350438400 + 71707024 = 18720^2 + 8468^2 .

It is a junction number, because it is equal to n+sod(n) for n = 422145392 and 422145401.

It is not an unprimeable number, because it can be changed into a prime (422145421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248059 + ... + 249754.

Almost surely, 2^422145424 is an apocalyptic number.

It is an amenable number.

422145424 is a deficient number, since it is larger than the sum of its proper divisors (411195212).

422145424 is a wasteful number, since it uses less digits than its factorization.

422145424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497874 (or 497868 counting only the distinct ones).

The product of its digits is 10240, while the sum is 28.

The square root of 422145424 is about 20546.1778440663. The cubic root of 422145424 is about 750.1602170308.

Adding to 422145424 its reverse (424541224), we get a palindrome (846686648).

The spelling of 422145424 in words is "four hundred twenty-two million, one hundred forty-five thousand, four hundred twenty-four".