4021423113344 has 192 divisors, whose sum is σ = 10133756418240. Its totient is φ = 1575443810304.

The previous prime is 4021423113343. The next prime is 4021423113353. The reversal of 4021423113344 is 4433113241204.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 4021423113344.

It is not an unprimeable number, because it can be changed into a prime (4021423113343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8158787 + ... + 8637629.

It is an arithmetic number, because the mean of its divisors is an integer number (52779981345).

Almost surely, 2^{4021423113344} 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 4021423113344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5066878209120).

4021423113344 is an abundant number, since it is smaller than the sum of its proper divisors (6112333304896).

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

4021423113344 is a wasteful number, since it uses less digits than its factorization.

4021423113344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478987 (or 478968 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 4021423113344 its reverse (4433113241204), we get a palindrome (8454536354548).

The spelling of 4021423113344 in words is "four trillion, twenty-one billion, four hundred twenty-three million, one hundred thirteen thousand, three hundred forty-four".