420202244220 has 144 divisors (see below), whose sum is σ = 1293594261120. Its totient is φ = 101840140160.

The previous prime is 420202244219. The next prime is 420202244263. The reversal of 420202244220 is 22442202024.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 47642971 + ... + 47651789.

It is an arithmetic number, because the mean of its divisors is an integer number (8983293480).

Almost surely, 2^420202244220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420202244220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (646797130560).

420202244220 is an abundant number, since it is smaller than the sum of its proper divisors (873392016900).

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

420202244220 is a wasteful number, since it uses less digits than its factorization.

420202244220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15416 (or 15403 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 420202244220 its reverse (22442202024), we get a palindrome (442644446244).

The spelling of 420202244220 in words is "four hundred twenty billion, two hundred two million, two hundred forty-four thousand, two hundred twenty".