4043421121312 has 48 divisors (see below), whose sum is σ = 8236506411000. Its totient is φ = 1951635732480.

The previous prime is 4043421121303. The next prime is 4043421121393. The reversal of 4043421121312 is 2131211243404.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1530574762896 + 2512846358416 = 1237164^2 + 1585196^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4656862 + ... + 5456482.

Almost surely, 2^{4043421121312} is an apocalyptic number.

It is an amenable number.

4043421121312 is an abundant number, since it is smaller than the sum of its proper divisors (4193085289688).

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

4043421121312 is a wasteful number, since it uses less digits than its factorization.

4043421121312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805109 (or 805101 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 4043421121312 its reverse (2131211243404), we get a palindrome (6174632364716).

The spelling of 4043421121312 in words is "four trillion, forty-three billion, four hundred twenty-one million, one hundred twenty-one thousand, three hundred twelve".