1440242143340 has 576 divisors, whose sum is σ = 4203972928512. Its totient is φ = 402303283200.

The previous prime is 1440242143337. The next prime is 1440242143363. The reversal of 1440242143340 is 433412420441.

It is a junction number, because it is equal to n+sod(n) for n = 1440242143297 and 1440242143306.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1317695834 + ... + 1317696926.

It is an arithmetic number, because the mean of its divisors is an integer number (7298564112).

Almost surely, 2^{1440242143340} is an apocalyptic number.

1440242143340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1440242143340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2101986464256).

1440242143340 is an abundant number, since it is smaller than the sum of its proper divisors (2763730785172).

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

1440242143340 is a wasteful number, since it uses less digits than its factorization.

1440242143340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290 (or 1275 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

Adding to 1440242143340 its reverse (433412420441), we get a palindrome (1873654563781).

The spelling of 1440242143340 in words is "one trillion, four hundred forty billion, two hundred forty-two million, one hundred forty-three thousand, three hundred forty".