123666341 has 2 divisors, whose sum is σ = 123666342. Its totient is φ = 123666340.

The previous prime is 123666329. The next prime is 123666343. The reversal of 123666341 is 143666321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89397025 + 34269316 = 9455^2 + 5854^2 .

It is an emirp because it is prime and its reverse (143666321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123666341 is a prime.

Together with 123666343, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 123666298 and 123666307.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123666343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61833170 + 61833171.

It is an arithmetic number, because the mean of its divisors is an integer number (61833171).

Almost surely, 2^123666341 is an apocalyptic number.

It is an amenable number.

123666341 is a deficient number, since it is larger than the sum of its proper divisors (1).

123666341 is an equidigital number, since it uses as much as digits as its factorization.

123666341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The square root of 123666341 is about 11120.5369025061. The cubic root of 123666341 is about 498.2154261703.

The spelling of 123666341 in words is "one hundred twenty-three million, six hundred sixty-six thousand, three hundred forty-one".