1324020240421 has 2 divisors, whose sum is σ = 1324020240422. Its totient is φ = 1324020240420.

The previous prime is 1324020240397. The next prime is 1324020240437. The reversal of 1324020240421 is 1240420204231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1202246460900 + 121773779521 = 1096470^2 + 348961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1324020240421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1324020240481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662010120210 + 662010120211.

It is an arithmetic number, because the mean of its divisors is an integer number (662010120211).

Almost surely, 2^{1324020240421} is an apocalyptic number.

It is an amenable number.

1324020240421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1324020240421 is an equidigital number, since it uses as much as digits as its factorization.

1324020240421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 1324020240421 its reverse (1240420204231), we get a palindrome (2564440444652).

The spelling of 1324020240421 in words is "one trillion, three hundred twenty-four billion, twenty million, two hundred forty thousand, four hundred twenty-one".