42820425582 has 128 divisors (see below), whose sum is σ = 98565120000. Its totient is φ = 12275556480.

The previous prime is 42820425577. The next prime is 42820425601. The reversal of 42820425582 is 28552402824.

It is a happy number.

It is a congruent number.

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, 69176469 + ... + 69177087.

It is an arithmetic number, because the mean of its divisors is an integer number (770040000).

Almost surely, 2^42820425582 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42820425582, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49282560000).

42820425582 is an abundant number, since it is smaller than the sum of its proper divisors (55744694418).

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

42820425582 is a wasteful number, since it uses less digits than its factorization.

42820425582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086.

The product of its (nonzero) digits is 409600, while the sum is 42.

The spelling of 42820425582 in words is "forty-two billion, eight hundred twenty million, four hundred twenty-five thousand, five hundred eighty-two".