424340123 has 2 divisors, whose sum is σ = 424340124. Its totient is φ = 424340122.

The previous prime is 424340117. The next prime is 424340141. The reversal of 424340123 is 321043424.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 424340123 - 2⁴ = 424340107 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (424340113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212170061 + 212170062.

It is an arithmetic number, because the mean of its divisors is an integer number (212170062).

Almost surely, 2^424340123 is an apocalyptic number.

424340123 is a deficient number, since it is larger than the sum of its proper divisors (1).

424340123 is an equidigital number, since it uses as much as digits as its factorization.

424340123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 424340123 is about 20599.5175428941. The cubic root of 424340123 is about 751.4579775284.

Adding to 424340123 its reverse (321043424), we get a palindrome (745383547).

It can be divided in two parts, 4243401 and 23, that added together give a palindrome (4243424).

The spelling of 424340123 in words is "four hundred twenty-four million, three hundred forty thousand, one hundred twenty-three".