420204222 has 12 divisors (see below), whose sum is σ = 910442520. Its totient is φ = 140068068.

The previous prime is 420204217. The next prime is 420204223. The reversal of 420204222 is 222402024.

420204222 is a `hidden beast` number, since 420 + 20 + 4 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 23344679 = 420204222 / (4 + 2 + 0 + 2 + 0 + 4 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 420204195 and 420204204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420204223) 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, 11672322 + ... + 11672357.

It is an arithmetic number, because the mean of its divisors is an integer number (75870210).

Almost surely, 2^420204222 is an apocalyptic number.

420204222 is an abundant number, since it is smaller than the sum of its proper divisors (490238298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420204222 is a wasteful number, since it uses less digits than its factorization.

420204222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23344687 (or 23344684 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 420204222 is about 20498.8834330068. The cubic root of 420204222 is about 749.0085994106.

Adding to 420204222 its reverse (222402024), we get a palindrome (642606246).

The spelling of 420204222 in words is "four hundred twenty million, two hundred four thousand, two hundred twenty-two".