420543022 has 16 divisors (see below), whose sum is σ = 643362912. Its totient is φ = 206096800.

The previous prime is 420542963. The next prime is 420543041. The reversal of 420543022 is 220345024.

It is a junction number, because it is equal to n+sod(n) for n = 420542984 and 420543002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200463 + ... + 202549.

It is an arithmetic number, because the mean of its divisors is an integer number (40210182).

Almost surely, 2^420543022 is an apocalyptic number.

420543022 is a deficient number, since it is larger than the sum of its proper divisors (222819890).

420543022 is a wasteful number, since it uses less digits than its factorization.

420543022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4043.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 420543022 is about 20507.1456326813. The cubic root of 420543022 is about 749.2098475415.

Adding to 420543022 its reverse (220345024), we get a palindrome (640888046).

The spelling of 420543022 in words is "four hundred twenty million, five hundred forty-three thousand, twenty-two".