123238447 has 2 divisors, whose sum is σ = 123238448. Its totient is φ = 123238446.

The previous prime is 123238421. The next prime is 123238459. The reversal of 123238447 is 744832321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123238447 - 2⁷ = 123238319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123238417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61619223 + 61619224.

It is an arithmetic number, because the mean of its divisors is an integer number (61619224).

Almost surely, 2^123238447 is an apocalyptic number.

123238447 is a deficient number, since it is larger than the sum of its proper divisors (1).

123238447 is an equidigital number, since it uses as much as digits as its factorization.

123238447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 34.

The square root of 123238447 is about 11101.2813224420. The cubic root of 123238447 is about 497.6401423328.

The spelling of 123238447 in words is "one hundred twenty-three million, two hundred thirty-eight thousand, four hundred forty-seven".