123000149 has 2 divisors, whose sum is σ = 123000150. Its totient is φ = 123000148.

The previous prime is 123000133. The next prime is 123000169. The reversal of 123000149 is 941000321.

It is an a-pointer prime, because the next prime (123000169) can be obtained adding 123000149 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119028100 + 3972049 = 10910^2 + 1993^2 .

It is a cyclic number.

It is not a de Polignac number, because 123000149 - 2⁴ = 123000133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123000149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123000169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61500074 + 61500075.

It is an arithmetic number, because the mean of its divisors is an integer number (61500075).

Almost surely, 2^123000149 is an apocalyptic number.

It is an amenable number.

123000149 is a deficient number, since it is larger than the sum of its proper divisors (1).

123000149 is an equidigital number, since it uses as much as digits as its factorization.

123000149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 123000149 is about 11090.5432238462. The cubic root of 123000149 is about 497.3191841412.

The spelling of 123000149 in words is "one hundred twenty-three million, one hundred forty-nine", and thus it is an aban number.