1234256339 has 2 divisors, whose sum is σ = 1234256340. Its totient is φ = 1234256338.

The previous prime is 1234256329. The next prime is 1234256357. The reversal of 1234256339 is 9336524321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1234256339 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1234256329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617128169 + 617128170.

It is an arithmetic number, because the mean of its divisors is an integer number (617128170).

Almost surely, 2^1234256339 is an apocalyptic number.

1234256339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234256339 is an equidigital number, since it uses as much as digits as its factorization.

1234256339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 38.

The square root of 1234256339 is about 35131.9845582341. The cubic root of 1234256339 is about 1072.6757322936.

The spelling of 1234256339 in words is "one billion, two hundred thirty-four million, two hundred fifty-six thousand, three hundred thirty-nine".