123204047 has 2 divisors, whose sum is σ = 123204048. Its totient is φ = 123204046.

The previous prime is 123204041. The next prime is 123204101. The reversal of 123204047 is 740402321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123204047 - 2¹⁰ = 123203023 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123204041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61602023 + 61602024.

It is an arithmetic number, because the mean of its divisors is an integer number (61602024).

Almost surely, 2^123204047 is an apocalyptic number.

123204047 is a deficient number, since it is larger than the sum of its proper divisors (1).

123204047 is an equidigital number, since it uses as much as digits as its factorization.

123204047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 123204047 is about 11099.7318436078. The cubic root of 123204047 is about 497.5938353174.

Adding to 123204047 its reverse (740402321), we get a palindrome (863606368).

The spelling of 123204047 in words is "one hundred twenty-three million, two hundred four thousand, forty-seven".