420024224020 has 24 divisors (see below), whose sum is σ = 886528294344. Its totient is φ = 167156846976.

The previous prime is 420024224017. The next prime is 420024224047. The reversal of 420024224020 is 20422420024.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 303576756484 + 116447467536 = 550978^2 + 341244^2 .

It is a junction number, because it is equal to n+sod(n) for n = 420024223982 and 420024224000.

It is a congruent number.

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, 53298627 + ... + 53306506.

It is an arithmetic number, because the mean of its divisors is an integer number (36938678931).

Almost surely, 2^420024224020 is an apocalyptic number.

It is an amenable number.

420024224020 is an abundant number, since it is smaller than the sum of its proper divisors (466504070324).

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

420024224020 is a wasteful number, since it uses less digits than its factorization.

420024224020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106605339 (or 106605337 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 420024224020 its reverse (20422420024), we get a palindrome (440446644044).

The spelling of 420024224020 in words is "four hundred twenty billion, twenty-four million, two hundred twenty-four thousand, twenty".