1440143320402 has 64 divisors (see below), whose sum is σ = 2349191061504. Its totient is φ = 660155569920.

The previous prime is 1440143320381. The next prime is 1440143320409. The reversal of 1440143320402 is 2040233410441.

It is not an unprimeable number, because it can be changed into a prime (1440143320409) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 300842253 + ... + 300847039.

It is an arithmetic number, because the mean of its divisors is an integer number (36706110336).

Almost surely, 2^{1440143320402} is an apocalyptic number.

1440143320402 is a deficient number, since it is larger than the sum of its proper divisors (909047741102).

1440143320402 is a wasteful number, since it uses less digits than its factorization.

1440143320402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6823.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1440143320402 its reverse (2040233410441), we get a palindrome (3480376730843).

The spelling of 1440143320402 in words is "one trillion, four hundred forty billion, one hundred forty-three million, three hundred twenty thousand, four hundred two".