1420256339 has 2 divisors, whose sum is σ = 1420256340. Its totient is φ = 1420256338.

The previous prime is 1420256329. The next prime is 1420256389. The reversal of 1420256339 is 9336520241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1420256339 - 2⁴ = 1420256323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1420256299 and 1420256308.

It is not a weakly prime, because it can be changed into another prime (1420256309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710128169 + 710128170.

It is an arithmetic number, because the mean of its divisors is an integer number (710128170).

Almost surely, 2^1420256339 is an apocalyptic number.

1420256339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420256339 is an equidigital number, since it uses as much as digits as its factorization.

1420256339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 1420256339 is about 37686.2884747225. The cubic root of 1420256339 is about 1124.0584949801.

The spelling of 1420256339 in words is "one billion, four hundred twenty million, two hundred fifty-six thousand, three hundred thirty-nine".