123663149 has 2 divisors, whose sum is σ = 123663150. Its totient is φ = 123663148.

The previous prime is 123663143. The next prime is 123663167. The reversal of 123663149 is 941366321.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64480900 + 59182249 = 8030^2 + 7693^2 .

It is a cyclic number.

It is not a de Polignac number, because 123663149 - 2⁸ = 123662893 is a prime.

It is a super-3 number, since 3×123663149³ (a number of 25 digits) contains 333 as substring.

It is equal to p_7038296 and since 123663149 and 7038296 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123663143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61831574 + 61831575.

It is an arithmetic number, because the mean of its divisors is an integer number (61831575).

Almost surely, 2^123663149 is an apocalyptic number.

It is an amenable number.

123663149 is a deficient number, since it is larger than the sum of its proper divisors (1).

123663149 is an equidigital number, since it uses as much as digits as its factorization.

123663149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The square root of 123663149 is about 11120.3933833296. The cubic root of 123663149 is about 498.2111395894.

The spelling of 123663149 in words is "one hundred twenty-three million, six hundred sixty-three thousand, one hundred forty-nine".