402022422 has 12 divisors (see below), whose sum is σ = 871048620. Its totient is φ = 134007468.

The previous prime is 402022403. The next prime is 402022429. The reversal of 402022422 is 224220204.

402022422 is a `hidden beast` number, since 40 + 202 + 2 + 422 = 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: 22334579 = 402022422 / (4 + 0 + 2 + 0 + 2 + 2 + 4 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 402022395 and 402022404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402022429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11167272 + ... + 11167307.

It is an arithmetic number, because the mean of its divisors is an integer number (72587385).

Almost surely, 2^402022422 is an apocalyptic number.

402022422 is an abundant number, since it is smaller than the sum of its proper divisors (469026198).

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

402022422 is a wasteful number, since it uses less digits than its factorization.

402022422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22334587 (or 22334584 counting only the distinct ones).

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

The square root of 402022422 is about 20050.4968018251. The cubic root of 402022422 is about 738.0459904800.

Adding to 402022422 its reverse (224220204), we get a palindrome (626242626).

It can be divided in two parts, 40202 and 2422, that added together give a palindrome (42624).

The spelling of 402022422 in words is "four hundred two million, twenty-two thousand, four hundred twenty-two".