1421941446493 has 2 divisors, whose sum is σ = 1421941446494. Its totient is φ = 1421941446492.

The previous prime is 1421941446491. The next prime is 1421941446533. The reversal of 1421941446493 is 3946441491241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1028394753604 + 393546692889 = 1014098^2 + 627333^2 .

It is an emirp because it is prime and its reverse (3946441491241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1421941446493 - 2¹ = 1421941446491 is a prime.

Together with 1421941446491, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1421941446493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421941446491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710970723246 + 710970723247.

It is an arithmetic number, because the mean of its divisors is an integer number (710970723247).

Almost surely, 2^{1421941446493} is an apocalyptic number.

It is an amenable number.

1421941446493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421941446493 is an equidigital number, since it uses as much as digits as its factorization.

1421941446493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2985984, while the sum is 52.

The spelling of 1421941446493 in words is "one trillion, four hundred twenty-one billion, nine hundred forty-one million, four hundred forty-six thousand, four hundred ninety-three".