422420202 has 12 divisors (see below), whose sum is σ = 915243810. Its totient is φ = 140806728.

The previous prime is 422420197. The next prime is 422420209. The reversal of 422420202 is 202024224.

422420202 is a `hidden beast` number, since 42 + 2 + 420 + 202 = 666.

It can be written as a sum of positive squares in only one way, i.e., 307265841 + 115154361 = 17529^2 + 10731^2 .

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: 23467789 = 422420202 / (4 + 2 + 2 + 4 + 2 + 0 + 2 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (422420209) 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, 11733877 + ... + 11733912.

Almost surely, 2^422420202 is an apocalyptic number.

422420202 is an abundant number, since it is smaller than the sum of its proper divisors (492823608).

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

422420202 is a wasteful number, since it uses less digits than its factorization.

422420202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23467797 (or 23467794 counting only the distinct ones).

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

The square root of 422420202 is about 20552.8635961026. The cubic root of 422420202 is about 750.3229435900.

Adding to 422420202 its reverse (202024224), we get a palindrome (624444426).

The spelling of 422420202 in words is "four hundred twenty-two million, four hundred twenty thousand, two hundred two".