402224402420 has 48 divisors (see below), whose sum is σ = 875328854400. Its totient is φ = 155069658240.

The previous prime is 402224402383. The next prime is 402224402441. The reversal of 402224402420 is 24204422204.

It is a super-2 number, since 2×402224402420² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 402224402420.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276080 + ... + 938439.

It is an arithmetic number, because the mean of its divisors is an integer number (18236017800).

Almost surely, 2^402224402420 is an apocalyptic number.

It is an amenable number.

402224402420 is an abundant number, since it is smaller than the sum of its proper divisors (473104451980).

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

402224402420 is a wasteful number, since it uses less digits than its factorization.

402224402420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215128 (or 1215126 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 402224402420 its reverse (24204422204), we get a palindrome (426428824624).

The spelling of 402224402420 in words is "four hundred two billion, two hundred twenty-four million, four hundred two thousand, four hundred twenty".