220020420042 has 20 divisors (see below), whose sum is σ = 493008719346. Its totient is φ = 73340139960.

The previous prime is 220020420029. The next prime is 220020420107. The reversal of 220020420042 is 240024020022.

220020420042 is a `hidden beast` number, since 2 + 200 + 2 + 0 + 420 + 0 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 205499929041 + 14520491001 = 453321^2 + 120501^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 220020419997 and 220020420024.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 679075209 + ... + 679075532.

Almost surely, 2^220020420042 is an apocalyptic number.

220020420042 is an abundant number, since it is smaller than the sum of its proper divisors (272988299304).

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

220020420042 is a wasteful number, since it uses less digits than its factorization.

220020420042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358150755 (or 1358150746 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 220020420042 its reverse (240024020022), we get a palindrome (460044440064).

The spelling of 220020420042 in words is "two hundred twenty billion, twenty million, four hundred twenty thousand, forty-two".