1440340424321 has 8 divisors (see below), whose sum is σ = 1557514552320. Its totient is φ = 1326771654208.

The previous prime is 1440340424317. The next prime is 1440340424333. The reversal of 1440340424321 is 1234240430441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1440340424321 - 2² = 1440340424317 is a prime.

It is a super-2 number, since 2×1440340424321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1440340424311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 901338641 + ... + 901340238.

It is an arithmetic number, because the mean of its divisors is an integer number (194689319040).

Almost surely, 2^{1440340424321} is an apocalyptic number.

It is an amenable number.

1440340424321 is a deficient number, since it is larger than the sum of its proper divisors (117174127999).

1440340424321 is a wasteful number, since it uses less digits than its factorization.

1440340424321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802678943.

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

Adding to 1440340424321 its reverse (1234240430441), we get a palindrome (2674580854762).

The spelling of 1440340424321 in words is "one trillion, four hundred forty billion, three hundred forty million, four hundred twenty-four thousand, three hundred twenty-one".