123204127 has 2 divisors, whose sum is σ = 123204128. Its totient is φ = 123204126.

The previous prime is 123204101. The next prime is 123204131. The reversal of 123204127 is 721402321.

It is a strong prime.

It is an emirp because it is prime and its reverse (721402321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123204127 is a prime.

It is a Chen prime.

It is equal to p_7013623 and since 123204127 and 7013623 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 123204098 and 123204107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123204527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61602063 + 61602064.

It is an arithmetic number, because the mean of its divisors is an integer number (61602064).

Almost surely, 2^123204127 is an apocalyptic number.

123204127 is a deficient number, since it is larger than the sum of its proper divisors (1).

123204127 is an equidigital number, since it uses as much as digits as its factorization.

123204127 is an evil number, because the sum of its binary digits is even.

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

The square root of 123204127 is about 11099.7354472978. The cubic root of 123204127 is about 497.5939430182.

Adding to 123204127 its reverse (721402321), we get a palindrome (844606448).

The spelling of 123204127 in words is "one hundred twenty-three million, two hundred four thousand, one hundred twenty-seven".