42530122020 has 192 divisors, whose sum is σ = 129266565120. Its totient is φ = 10416806400.

The previous prime is 42530122007. The next prime is 42530122021. The reversal of 42530122020 is 2022103524.

It is a super-2 number, since 2×42530122020² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42530122021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5600386 + ... + 5607974.

It is an arithmetic number, because the mean of its divisors is an integer number (673263360).

Almost surely, 2^42530122020 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 42530122020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64633282560).

42530122020 is an abundant number, since it is smaller than the sum of its proper divisors (86736443100).

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

42530122020 is a wasteful number, since it uses less digits than its factorization.

42530122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7786 (or 7784 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 42530122020 its reverse (2022103524), we get a palindrome (44552225544).

The spelling of 42530122020 in words is "forty-two billion, five hundred thirty million, one hundred twenty-two thousand, twenty".