1421043204440 has 16 divisors (see below), whose sum is σ = 3197347210080. Its totient is φ = 568417281760.

The previous prime is 1421043204433. The next prime is 1421043204467. The reversal of 1421043204440 is 444023401241.

It is a congruent number.

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, 17763040016 + ... + 17763040095.

It is an arithmetic number, because the mean of its divisors is an integer number (199834200630).

Almost surely, 2^{1421043204440} is an apocalyptic number.

1421043204440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421043204440 is an abundant number, since it is smaller than the sum of its proper divisors (1776304005640).

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

1421043204440 is a wasteful number, since it uses less digits than its factorization.

1421043204440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35526080122 (or 35526080118 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

Adding to 1421043204440 its reverse (444023401241), we get a palindrome (1865066605681).

The spelling of 1421043204440 in words is "one trillion, four hundred twenty-one billion, forty-three million, two hundred four thousand, four hundred forty".