123103439 has 2 divisors, whose sum is σ = 123103440. Its totient is φ = 123103438.

The previous prime is 123103433. The next prime is 123103447. The reversal of 123103439 is 934301321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123103439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123103433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61551719 + 61551720.

It is an arithmetic number, because the mean of its divisors is an integer number (61551720).

Almost surely, 2^123103439 is an apocalyptic number.

123103439 is a deficient number, since it is larger than the sum of its proper divisors (1).

123103439 is an equidigital number, since it uses as much as digits as its factorization.

123103439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 123103439 is about 11095.1989166486. The cubic root of 123103439 is about 497.4583539628.

The spelling of 123103439 in words is "one hundred twenty-three million, one hundred three thousand, four hundred thirty-nine".