1440321021143 has 16 divisors (see below), whose sum is σ = 1485209911680. Its totient is φ = 1395987729696.

The previous prime is 1440321021121. The next prime is 1440321021157. The reversal of 1440321021143 is 3411201230441.

It is a cyclic number.

It is not a de Polignac number, because 1440321021143 - 2¹⁰ = 1440321020119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440321021163) 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 15 ways as a sum of consecutive naturals, for example, 2986196 + ... + 3434822.

It is an arithmetic number, because the mean of its divisors is an integer number (92825619480).

Almost surely, 2^{1440321021143} is an apocalyptic number.

1440321021143 is a deficient number, since it is larger than the sum of its proper divisors (44888890537).

1440321021143 is a wasteful number, since it uses less digits than its factorization.

1440321021143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449246.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 1440321021143 its reverse (3411201230441), we get a palindrome (4851522251584).

The spelling of 1440321021143 in words is "one trillion, four hundred forty billion, three hundred twenty-one million, twenty-one thousand, one hundred forty-three".