423424123 has 2 divisors, whose sum is σ = 423424124. Its totient is φ = 423424122.

The previous prime is 423424103. The next prime is 423424147. The reversal of 423424123 is 321424324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423424123 is a prime.

It is not a weakly prime, because it can be changed into another prime (423424103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211712061 + 211712062.

It is an arithmetic number, because the mean of its divisors is an integer number (211712062).

Almost surely, 2^423424123 is an apocalyptic number.

423424123 is a deficient number, since it is larger than the sum of its proper divisors (1).

423424123 is an equidigital number, since it uses as much as digits as its factorization.

423424123 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 423424123 is about 20577.2720009237. The cubic root of 423424123 is about 750.9168774723.

Adding to 423424123 its reverse (321424324), we get a palindrome (744848447).

The spelling of 423424123 in words is "four hundred twenty-three million, four hundred twenty-four thousand, one hundred twenty-three".