402222422 has 16 divisors (see below), whose sum is σ = 693101472. Its totient is φ = 171486720.

The previous prime is 402222409. The next prime is 402222433. The reversal of 402222422 is 224222204.

It is a junction number, because it is equal to n+sod(n) for n = 402222394 and 402222403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71729 + ... + 77132.

It is an arithmetic number, because the mean of its divisors is an integer number (43318842).

Almost surely, 2^402222422 is an apocalyptic number.

402222422 is a deficient number, since it is larger than the sum of its proper divisors (290879050).

402222422 is a wasteful number, since it uses less digits than its factorization.

402222422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149063.

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 402222422 is about 20055.4835892830. The cubic root of 402222422 is about 738.1683590504.

Adding to 402222422 its reverse (224222204), we get a palindrome (626444626).

The spelling of 402222422 in words is "four hundred two million, two hundred twenty-two thousand, four hundred twenty-two".