42521244020 has 96 divisors (see below), whose sum is σ = 95570399232. Its totient is φ = 15852912768.

The previous prime is 42521244001. The next prime is 42521244061. The reversal of 42521244020 is 2044212524.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9155819 + ... + 9160461.

It is an arithmetic number, because the mean of its divisors is an integer number (995524992).

Almost surely, 2^42521244020 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 42521244020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47785199616).

42521244020 is an abundant number, since it is smaller than the sum of its proper divisors (53049155212).

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

42521244020 is a wasteful number, since it uses less digits than its factorization.

42521244020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5181 (or 5179 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 42521244020 its reverse (2044212524), we get a palindrome (44565456544).

The spelling of 42521244020 in words is "forty-two billion, five hundred twenty-one million, two hundred forty-four thousand, twenty".