42242244440 has 128 divisors (see below), whose sum is σ = 106834075200. Its totient is φ = 14900920320.

The previous prime is 42242244431. The next prime is 42242244491. The reversal of 42242244440 is 4444224224.

It is a junction number, because it is equal to n+sod(n) for n = 42242244397 and 42242244406.

It is a congruent number.

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, 2065304 + ... + 2085656.

Almost surely, 2^42242244440 is an apocalyptic number.

42242244440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42242244440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53417037600).

42242244440 is an abundant number, since it is smaller than the sum of its proper divisors (64591830760).

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

42242244440 is a wasteful number, since it uses less digits than its factorization.

42242244440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20517 (or 20513 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 32.

Adding to 42242244440 its reverse (4444224224), we get a palindrome (46686468664).

It can be divided in two parts, 42242 and 244440, that added together give a palindrome (286682).

The spelling of 42242244440 in words is "forty-two billion, two hundred forty-two million, two hundred forty-four thousand, four hundred forty".