123424447 has 2 divisors, whose sum is σ = 123424448. Its totient is φ = 123424446.

The previous prime is 123424429. The next prime is 123424453. The reversal of 123424447 is 744424321.

It is a strong prime.

It is an emirp because it is prime and its reverse (744424321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123424447 - 2¹¹ = 123422399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123424747) 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, 61712223 + 61712224.

It is an arithmetic number, because the mean of its divisors is an integer number (61712224).

Almost surely, 2^123424447 is an apocalyptic number.

123424447 is a deficient number, since it is larger than the sum of its proper divisors (1).

123424447 is an equidigital number, since it uses as much as digits as its factorization.

123424447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21504, while the sum is 31.

The square root of 123424447 is about 11109.6555752192. The cubic root of 123424447 is about 497.8903741427.

Adding to 123424447 its reverse (744424321), we get a palindrome (867848768).

The spelling of 123424447 in words is "one hundred twenty-three million, four hundred twenty-four thousand, four hundred forty-seven".