123241187 has 2 divisors, whose sum is σ = 123241188. Its totient is φ = 123241186.

The previous prime is 123241133. The next prime is 123241189. The reversal of 123241187 is 781142321.

It is a strong prime.

It is an emirp because it is prime and its reverse (781142321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123241187 - 2²² = 119046883 is a prime.

Together with 123241189, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123241189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61620593 + 61620594.

It is an arithmetic number, because the mean of its divisors is an integer number (61620594).

Almost surely, 2^123241187 is an apocalyptic number.

123241187 is a deficient number, since it is larger than the sum of its proper divisors (1).

123241187 is an equidigital number, since it uses as much as digits as its factorization.

123241187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 29.

The square root of 123241187 is about 11101.4047309338. The cubic root of 123241187 is about 497.6438303698.

The spelling of 123241187 in words is "one hundred twenty-three million, two hundred forty-one thousand, one hundred eighty-seven".