1243363123459 has 2 divisors, whose sum is σ = 1243363123460. Its totient is φ = 1243363123458.

The previous prime is 1243363123433. The next prime is 1243363123487. The reversal of 1243363123459 is 9543213633421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1243363123459 - 2²⁷ = 1243228905731 is a prime.

It is a super-2 number, since 2×1243363123459² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1243363120459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621681561729 + 621681561730.

It is an arithmetic number, because the mean of its divisors is an integer number (621681561730).

Almost surely, 2^{1243363123459} is an apocalyptic number.

1243363123459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243363123459 is an equidigital number, since it uses as much as digits as its factorization.

1243363123459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 46.

The spelling of 1243363123459 in words is "one trillion, two hundred forty-three billion, three hundred sixty-three million, one hundred twenty-three thousand, four hundred fifty-nine".