42844027820 has 192 divisors, whose sum is σ = 103349385216. Its totient is φ = 14780881920.

The previous prime is 42844027687. The next prime is 42844027841. The reversal of 42844027820 is 2872044824.

It is a super-2 number, since 2×42844027820² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76918982 + ... + 76919538.

It is an arithmetic number, because the mean of its divisors is an integer number (538278048).

Almost surely, 2^42844027820 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 42844027820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51674692608).

42844027820 is an abundant number, since it is smaller than the sum of its proper divisors (60505357396).

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

42844027820 is a wasteful number, since it uses less digits than its factorization.

42844027820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 838 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 41.

The spelling of 42844027820 in words is "forty-two billion, eight hundred forty-four million, twenty-seven thousand, eight hundred twenty".