1043220401440 has 96 divisors (see below), whose sum is σ = 2822082318720. Its totient is φ = 356991473664.

The previous prime is 1043220401437. The next prime is 1043220401449. The reversal of 1043220401440 is 441040223401.

It is not an unprimeable number, because it can be changed into a prime (1043220401449) 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, 304725 + ... + 1476244.

It is an arithmetic number, because the mean of its divisors is an integer number (29396690820).

Almost surely, 2^{1043220401440} is an apocalyptic number.

1043220401440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1043220401440 is an abundant number, since it is smaller than the sum of its proper divisors (1778861917280).

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

1043220401440 is a wasteful number, since it uses less digits than its factorization.

1043220401440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781514 (or 1781506 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 1043220401440 its reverse (441040223401), we get a palindrome (1484260624841).

The spelling of 1043220401440 in words is "one trillion, forty-three billion, two hundred twenty million, four hundred one thousand, four hundred forty".