4021444442420 has 48 divisors (see below), whose sum is σ = 8814049026048. Its totient is φ = 1538318284800.

The previous prime is 4021444442387. The next prime is 4021444442423. The reversal of 4021444442420 is 242444441204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021444442423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1297997 + ... + 3118923.

It is an arithmetic number, because the mean of its divisors is an integer number (183626021376).

Almost surely, 2^{4021444442420} is an apocalyptic number.

It is an amenable number.

4021444442420 is an abundant number, since it is smaller than the sum of its proper divisors (4792604583628).

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

4021444442420 is a wasteful number, since it uses less digits than its factorization.

4021444442420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1825760 (or 1825758 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 35.

Adding to 4021444442420 its reverse (242444441204), we get a palindrome (4263888883624).

The spelling of 4021444442420 in words is "four trillion, twenty-one billion, four hundred forty-four million, four hundred forty-two thousand, four hundred twenty".