42042220242 has 64 divisors (see below), whose sum is σ = 93070010880. Its totient is φ = 12554528000.

The previous prime is 42042220223. The next prime is 42042220271. The reversal of 42042220242 is 24202224024.

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, 2187109 + ... + 2206247.

It is an arithmetic number, because the mean of its divisors is an integer number (1454218920).

Almost surely, 2^42042220242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42042220242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46535005440).

42042220242 is an abundant number, since it is smaller than the sum of its proper divisors (51027790638).

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

42042220242 is a wasteful number, since it uses less digits than its factorization.

42042220242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19639.

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 42042220242 its reverse (24202224024), we get a palindrome (66244444266).

The spelling of 42042220242 in words is "forty-two billion, forty-two million, two hundred twenty thousand, two hundred forty-two".