1440314403421 has 2 divisors, whose sum is σ = 1440314403422. Its totient is φ = 1440314403420.

The previous prime is 1440314403403. The next prime is 1440314403431. The reversal of 1440314403421 is 1243044130441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1438920202500 + 1394200921 = 1199550^2 + 37339^2 .

It is an emirp because it is prime and its reverse (1243044130441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1440314403421 - 2⁹ = 1440314402909 is a prime.

It is a super-2 number, since 2×1440314403421² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440314403431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720157201710 + 720157201711.

It is an arithmetic number, because the mean of its divisors is an integer number (720157201711).

Almost surely, 2^{1440314403421} is an apocalyptic number.

It is an amenable number.

1440314403421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440314403421 is an equidigital number, since it uses as much as digits as its factorization.

1440314403421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 1440314403421 its reverse (1243044130441), we get a palindrome (2683358533862).

The spelling of 1440314403421 in words is "one trillion, four hundred forty billion, three hundred fourteen million, four hundred three thousand, four hundred twenty-one".