1421343727 has 2 divisors, whose sum is σ = 1421343728. Its totient is φ = 1421343726.

The previous prime is 1421343691. The next prime is 1421343731. The reversal of 1421343727 is 7273431241.

It is a strong prime.

It is an emirp because it is prime and its reverse (7273431241) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421343727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1421343692 and 1421343701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421343757) 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, 710671863 + 710671864.

It is an arithmetic number, because the mean of its divisors is an integer number (710671864).

Almost surely, 2^1421343727 is an apocalyptic number.

1421343727 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421343727 is an equidigital number, since it uses as much as digits as its factorization.

1421343727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 34.

The square root of 1421343727 is about 37700.7125529479. The cubic root of 1421343727 is about 1124.3452920130.

Adding to 1421343727 its reverse (7273431241), we get a palindrome (8694774968).

The spelling of 1421343727 in words is "one billion, four hundred twenty-one million, three hundred forty-three thousand, seven hundred twenty-seven".