42550020520 has 128 divisors (see below), whose sum is σ = 111498220800. Its totient is φ = 14311987200.

The previous prime is 42550020479. The next prime is 42550020529. The reversal of 42550020520 is 2502005524.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42550020529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6982675 + ... + 6988765.

It is an arithmetic number, because the mean of its divisors is an integer number (871079850).

Almost surely, 2^42550020520 is an apocalyptic number.

42550020520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42550020520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55749110400).

42550020520 is an abundant number, since it is smaller than the sum of its proper divisors (68948200280).

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

42550020520 is a wasteful number, since it uses less digits than its factorization.

42550020520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6579 (or 6575 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The spelling of 42550020520 in words is "forty-two billion, five hundred fifty million, twenty thousand, five hundred twenty".