123204271 has 2 divisors, whose sum is σ = 123204272. Its totient is φ = 123204270.

The previous prime is 123204251. The next prime is 123204313. The reversal of 123204271 is 172402321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123204271 - 2¹¹ = 123202223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123204251) 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, 61602135 + 61602136.

It is an arithmetic number, because the mean of its divisors is an integer number (61602136).

Almost surely, 2^123204271 is an apocalyptic number.

123204271 is a deficient number, since it is larger than the sum of its proper divisors (1).

123204271 is an equidigital number, since it uses as much as digits as its factorization.

123204271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 123204271 is about 11099.7419339370. The cubic root of 123204271 is about 497.5941368794.

Adding to 123204271 its reverse (172402321), we get a palindrome (295606592).

The spelling of 123204271 in words is "one hundred twenty-three million, two hundred four thousand, two hundred seventy-one".