1420321439 has 2 divisors, whose sum is σ = 1420321440. Its totient is φ = 1420321438.

The previous prime is 1420321411. The next prime is 1420321447. The reversal of 1420321439 is 9341230241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1420321439 - 2²⁴ = 1403544223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420321739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710160719 + 710160720.

It is an arithmetic number, because the mean of its divisors is an integer number (710160720).

Almost surely, 2^1420321439 is an apocalyptic number.

1420321439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420321439 is an equidigital number, since it uses as much as digits as its factorization.

1420321439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1420321439 is about 37687.1521741826. The cubic root of 1420321439 is about 1124.0756691310.

The spelling of 1420321439 in words is "one billion, four hundred twenty million, three hundred twenty-one thousand, four hundred thirty-nine".