234405123 has 4 divisors (see below), whose sum is σ = 312540168. Its totient is φ = 156270080.

The previous prime is 234405113. The next prime is 234405133. The reversal of 234405123 is 321504432.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (234405113) and next prime (234405133).

It is a cyclic number.

It is not a de Polignac number, because 234405123 - 2¹⁰ = 234404099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 234405093 and 234405102.

It is not an unprimeable number, because it can be changed into a prime (234405103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39067518 + ... + 39067523.

It is an arithmetic number, because the mean of its divisors is an integer number (78135042).

Almost surely, 2^234405123 is an apocalyptic number.

234405123 is a deficient number, since it is larger than the sum of its proper divisors (78135045).

234405123 is an equidigital number, since it uses as much as digits as its factorization.

234405123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78135044.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 234405123 is about 15310.2946738461. The cubic root of 234405123 is about 616.5794315689.

Adding to 234405123 its reverse (321504432), we get a palindrome (555909555).

The spelling of 234405123 in words is "two hundred thirty-four million, four hundred five thousand, one hundred twenty-three".