420020233220 has 24 divisors (see below), whose sum is σ = 1008048560064. Its totient is φ = 144006937056.

The previous prime is 420020233219. The next prime is 420020233319. The reversal of 420020233220 is 22332020024.

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 = 420020233192 and 420020233201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1500072122 + ... + 1500072401.

It is an arithmetic number, because the mean of its divisors is an integer number (42002023336).

Almost surely, 2^420020233220 is an apocalyptic number.

It is an amenable number.

420020233220 is an abundant number, since it is smaller than the sum of its proper divisors (588028326844).

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

420020233220 is a wasteful number, since it uses less digits than its factorization.

420020233220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3000144539 (or 3000144537 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 420020233220 its reverse (22332020024), we get a palindrome (442352253244).

The spelling of 420020233220 in words is "four hundred twenty billion, twenty million, two hundred thirty-three thousand, two hundred twenty".