42271983820 has 96 divisors (see below), whose sum is σ = 101202877440. Its totient is φ = 14681314560.

The previous prime is 42271983799. The next prime is 42271983821. The reversal of 42271983820 is 2838917224.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (42271983821) 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 31 ways as a sum of consecutive naturals, for example, 3581649 + ... + 3593431.

It is an arithmetic number, because the mean of its divisors is an integer number (1054196640).

Almost surely, 2^42271983820 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 42271983820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50601438720).

42271983820 is an abundant number, since it is smaller than the sum of its proper divisors (58930893620).

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

42271983820 is a wasteful number, since it uses less digits than its factorization.

42271983820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12535 (or 12533 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 42271983820 in words is "forty-two billion, two hundred seventy-one million, nine hundred eighty-three thousand, eight hundred twenty".