42020424220 has 48 divisors (see below), whose sum is σ = 95017315680. Its totient is φ = 15551320064.

The previous prime is 42020424209. The next prime is 42020424223. The reversal of 42020424220 is 2242402024.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42020424191 and 42020424200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42020424223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1027309 + ... + 1067428.

It is an arithmetic number, because the mean of its divisors is an integer number (1979527410).

Almost surely, 2^42020424220 is an apocalyptic number.

It is an amenable number.

42020424220 is an abundant number, since it is smaller than the sum of its proper divisors (52996891460).

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

42020424220 is a wasteful number, since it uses less digits than its factorization.

42020424220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2094822 (or 2094820 counting only the distinct ones).

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

Adding to 42020424220 its reverse (2242402024), we get a palindrome (44262826244).

The spelling of 42020424220 in words is "forty-two billion, twenty million, four hundred twenty-four thousand, two hundred twenty".