123321121439 has 2 divisors, whose sum is σ = 123321121440. Its totient is φ = 123321121438.

The previous prime is 123321121381. The next prime is 123321121457. The reversal of 123321121439 is 934121123321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123321121439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123321121499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61660560719 + 61660560720.

It is an arithmetic number, because the mean of its divisors is an integer number (61660560720).

Almost surely, 2^123321121439 is an apocalyptic number.

123321121439 is a deficient number, since it is larger than the sum of its proper divisors (1).

123321121439 is an equidigital number, since it uses as much as digits as its factorization.

123321121439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The spelling of 123321121439 in words is "one hundred twenty-three billion, three hundred twenty-one million, one hundred twenty-one thousand, four hundred thirty-nine".