42020456620 has 96 divisors (see below), whose sum is σ = 93502886400. Its totient is φ = 15818457600.

The previous prime is 42020456617. The next prime is 42020456641. The reversal of 42020456620 is 2665402024.

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, 55217040 + ... + 55217800.

It is an arithmetic number, because the mean of its divisors is an integer number (973988400).

Almost surely, 2^42020456620 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 42020456620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46751443200).

42020456620 is an abundant number, since it is smaller than the sum of its proper divisors (51482429780).

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

42020456620 is a wasteful number, since it uses less digits than its factorization.

42020456620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559 (or 1557 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 42020456620 its reverse (2665402024), we get a palindrome (44685858644).

The spelling of 42020456620 in words is "forty-two billion, twenty million, four hundred fifty-six thousand, six hundred twenty".