123242443 has 2 divisors, whose sum is σ = 123242444. Its totient is φ = 123242442.

The previous prime is 123242423. The next prime is 123242447. The reversal of 123242443 is 344242321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123242443 is a prime.

It is not a weakly prime, because it can be changed into another prime (123242447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61621221 + 61621222.

It is an arithmetic number, because the mean of its divisors is an integer number (61621222).

Almost surely, 2^123242443 is an apocalyptic number.

123242443 is a deficient number, since it is larger than the sum of its proper divisors (1).

123242443 is an equidigital number, since it uses as much as digits as its factorization.

123242443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 25.

The square root of 123242443 is about 11101.4613002073. The cubic root of 123242443 is about 497.6455209262.

Adding to 123242443 its reverse (344242321), we get a palindrome (467484764).

The spelling of 123242443 in words is "one hundred twenty-three million, two hundred forty-two thousand, four hundred forty-three".