4021423201444 has 12 divisors (see below), whose sum is σ = 7677262475568. Its totient is φ = 1827919637000.

The previous prime is 4021423201429. The next prime is 4021423201457. The reversal of 4021423201444 is 4441023241204.

It is a happy number.

It is a super-2 number, since 2×4021423201444² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45697990882 + ... + 45697990969.

It is an arithmetic number, because the mean of its divisors is an integer number (639771872964).

Almost surely, 2^{4021423201444} is an apocalyptic number.

4021423201444 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4021423201444 is a deficient number, since it is larger than the sum of its proper divisors (3655839274124).

4021423201444 is a wasteful number, since it uses less digits than its factorization.

4021423201444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91395981866 (or 91395981864 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 31.

Adding to 4021423201444 its reverse (4441023241204), we get a palindrome (8462446442648).

The spelling of 4021423201444 in words is "four trillion, twenty-one billion, four hundred twenty-three million, two hundred one thousand, four hundred forty-four".