420004422020 has 24 divisors (see below), whose sum is σ = 886882273368. Its totient is φ = 167073580800.

The previous prime is 420004422011. The next prime is 420004422059. The reversal of 420004422020 is 20224400024.

It can be written as a sum of positive squares in 4 ways, for example, as 7591288384 + 412413133636 = 87128^2 + 642194^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 420004421983 and 420004422001.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 58008041 + ... + 58015280.

It is an arithmetic number, because the mean of its divisors is an integer number (36953428057).

Almost surely, 2^420004422020 is an apocalyptic number.

It is an amenable number.

420004422020 is an abundant number, since it is smaller than the sum of its proper divisors (466877851348).

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

420004422020 is a wasteful number, since it uses less digits than its factorization.

420004422020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116023511 (or 116023509 counting only the distinct ones).

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

Adding to 420004422020 its reverse (20224400024), we get a palindrome (440228822044).

The spelling of 420004422020 in words is "four hundred twenty billion, four million, four hundred twenty-two thousand, twenty".