1421343521329 has 2 divisors, whose sum is σ = 1421343521330. Its totient is φ = 1421343521328.

The previous prime is 1421343521303. The next prime is 1421343521359. The reversal of 1421343521329 is 9231253431241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1371369813025 + 49973708304 = 1171055^2 + 223548^2 .

It is an emirp because it is prime and its reverse (9231253431241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421343521329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1421343521291 and 1421343521300.

It is not a weakly prime, because it can be changed into another prime (1421343521359) 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 as a sum of consecutive naturals, namely, 710671760664 + 710671760665.

It is an arithmetic number, because the mean of its divisors is an integer number (710671760665).

Almost surely, 2^{1421343521329} is an apocalyptic number.

It is an amenable number.

1421343521329 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421343521329 is an equidigital number, since it uses as much as digits as its factorization.

1421343521329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 40.

The spelling of 1421343521329 in words is "one trillion, four hundred twenty-one billion, three hundred forty-three million, five hundred twenty-one thousand, three hundred twenty-nine".