123469139 has 2 divisors, whose sum is σ = 123469140. Its totient is φ = 123469138.

The previous prime is 123469133. The next prime is 123469219. The reversal of 123469139 is 931964321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123469139 - 2⁸ = 123468883 is a prime.

It is not a weakly prime, because it can be changed into another prime (123469133) 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, 61734569 + 61734570.

It is an arithmetic number, because the mean of its divisors is an integer number (61734570).

Almost surely, 2^123469139 is an apocalyptic number.

123469139 is a deficient number, since it is larger than the sum of its proper divisors (1).

123469139 is an equidigital number, since it uses as much as digits as its factorization.

123469139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 38.

The square root of 123469139 is about 11111.6667966602. Note that the first 3 decimals coincide. The cubic root of 123469139 is about 497.9504622692.

The spelling of 123469139 in words is "one hundred twenty-three million, four hundred sixty-nine thousand, one hundred thirty-nine".