1421339 has 2 divisors, whose sum is σ = 1421340. Its totient is φ = 1421338.

The previous prime is 1421317. The next prime is 1421351. The reversal of 1421339 is 9331241.

It is a strong prime.

It is an emirp because it is prime and its reverse (9331241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1421339 - 2⁸ = 1421083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1421309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710669 + 710670.

It is an arithmetic number, because the mean of its divisors is an integer number (710670).

2^1421339 is an apocalyptic number.

1421339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421339 is an equidigital number, since it uses as much as digits as its factorization.

1421339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 23.

The square root of 1421339 is about 1192.1992283171. The cubic root of 1421339 is about 112.4344045590.

The spelling of 1421339 in words is "one million, four hundred twenty-one thousand, three hundred thirty-nine".