1440042304144 has 40 divisors (see below), whose sum is σ = 2954820408408. Its totient is φ = 677525667840.

The previous prime is 1440042304069. The next prime is 1440042304159. The reversal of 1440042304144 is 4414032400441.

It can be written as a sum of positive squares in 4 ways, for example, as 477508640400 + 962533663744 = 691020^2 + 981088^2 .

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, 760684 + ... + 1859764.

Almost surely, 2^{1440042304144} is an apocalyptic number.

It is an amenable number.

1440042304144 is an abundant number, since it is smaller than the sum of its proper divisors (1514778104264).

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

1440042304144 is a wasteful number, since it uses less digits than its factorization.

1440042304144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103923 (or 1103917 counting only the distinct ones).

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

Adding to 1440042304144 its reverse (4414032400441), we get a palindrome (5854074704585).

The spelling of 1440042304144 in words is "one trillion, four hundred forty billion, forty-two million, three hundred four thousand, one hundred forty-four".