123424111 has 2 divisors, whose sum is σ = 123424112. Its totient is φ = 123424110.

The previous prime is 123424109. The next prime is 123424127. The reversal of 123424111 is 111424321.

It is a weak prime.

It is an emirp because it is prime and its reverse (111424321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123424111 - 2¹ = 123424109 is a prime.

It is a super-2 number, since 2×123424111² = 30467022352280642, which contains 22 as substring.

Together with 123424109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123424181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61712055 + 61712056.

It is an arithmetic number, because the mean of its divisors is an integer number (61712056).

Almost surely, 2^123424111 is an apocalyptic number.

123424111 is a deficient number, since it is larger than the sum of its proper divisors (1).

123424111 is an equidigital number, since it uses as much as digits as its factorization.

123424111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 123424111 is about 11109.6404532280. The cubic root of 123424111 is about 497.8899223378.

Adding to 123424111 its reverse (111424321), we get a palindrome (234848432).

The spelling of 123424111 in words is "one hundred twenty-three million, four hundred twenty-four thousand, one hundred eleven".