434404123 has 2 divisors, whose sum is σ = 434404124. Its totient is φ = 434404122.

The previous prime is 434404099. The next prime is 434404171. The reversal of 434404123 is 321404434.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434404123 is a prime.

It is not a weakly prime, because it can be changed into another prime (434404183) 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, 217202061 + 217202062.

It is an arithmetic number, because the mean of its divisors is an integer number (217202062).

Almost surely, 2^434404123 is an apocalyptic number.

434404123 is a deficient number, since it is larger than the sum of its proper divisors (1).

434404123 is an equidigital number, since it uses as much as digits as its factorization.

434404123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 434404123 is about 20842.3636615428. The cubic root of 434404123 is about 757.3523538152.

Adding to 434404123 its reverse (321404434), we get a palindrome (755808557).

The spelling of 434404123 in words is "four hundred thirty-four million, four hundred four thousand, one hundred twenty-three".