123204434 has 4 divisors (see below), whose sum is σ = 184806654. Its totient is φ = 61602216.

The previous prime is 123204397. The next prime is 123204439. The reversal of 123204434 is 434402321.

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

It can be written as a sum of positive squares in only one way, i.e., 119793025 + 3411409 = 10945^2 + 1847^2 .

It is not an unprimeable number, because it can be changed into a prime (123204439) 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, 30801107 + ... + 30801110.

Almost surely, 2^123204434 is an apocalyptic number.

123204434 is a deficient number, since it is larger than the sum of its proper divisors (61602220).

123204434 is an equidigital number, since it uses as much as digits as its factorization.

123204434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61602219.

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

The square root of 123204434 is about 11099.7492764476. The cubic root of 123204434 is about 497.5943563193.

Adding to 123204434 its reverse (434402321), we get a palindrome (557606755).

The spelling of 123204434 in words is "one hundred twenty-three million, two hundred four thousand, four hundred thirty-four".