402424422020 has 24 divisors (see below), whose sum is σ = 845449930584. Its totient is φ = 160901455616.

The previous prime is 402424421953. The next prime is 402424422073. The reversal of 402424422020 is 20224424204.

It can be written as a sum of positive squares in 4 ways, for example, as 58108959364 + 344315462656 = 241058^2 + 586784^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4221257 + ... + 4315536.

It is an arithmetic number, because the mean of its divisors is an integer number (35227080441).

Almost surely, 2^402424422020 is an apocalyptic number.

It is an amenable number.

402424422020 is an abundant number, since it is smaller than the sum of its proper divisors (443025508564).

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

402424422020 is a wasteful number, since it uses less digits than its factorization.

402424422020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8539159 (or 8539157 counting only the distinct ones).

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

Adding to 402424422020 its reverse (20224424204), we get a palindrome (422648846224).

The spelling of 402424422020 in words is "four hundred two billion, four hundred twenty-four million, four hundred twenty-two thousand, twenty".