4021442443240 has 16 divisors (see below), whose sum is σ = 9048245497380. Its totient is φ = 1608576977280.

The previous prime is 4021442443219. The next prime is 4021442443241. The reversal of 4021442443240 is 423442441204.

It can be written as a sum of positive squares in 2 ways, for example, as 3859708168996 + 161734274244 = 1964614^2 + 402162^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4021442443196 and 4021442443205.

It is not an unprimeable number, because it can be changed into a prime (4021442443241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50268030501 + ... + 50268030580.

Almost surely, 2^{4021442443240} is an apocalyptic number.

4021442443240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4021442443240 is an abundant number, since it is smaller than the sum of its proper divisors (5026803054140).

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

4021442443240 is a wasteful number, since it uses less digits than its factorization.

4021442443240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100536061092 (or 100536061088 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 34.

Adding to 4021442443240 its reverse (423442441204), we get a palindrome (4444884884444).

The spelling of 4021442443240 in words is "four trillion, twenty-one billion, four hundred forty-two million, four hundred forty-three thousand, two hundred forty".