124557149 has 2 divisors, whose sum is σ = 124557150. Its totient is φ = 124557148.

The previous prime is 124557137. The next prime is 124557161. The reversal of 124557149 is 941755421.

It is a balanced prime because it is at equal distance from previous prime (124557137) and next prime (124557161).

It can be written as a sum of positive squares in only one way, i.e., 104244100 + 20313049 = 10210^2 + 4507^2 .

It is an emirp because it is prime and its reverse (941755421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124557149 - 2²⁰ = 123508573 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124557119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62278574 + 62278575.

It is an arithmetic number, because the mean of its divisors is an integer number (62278575).

Almost surely, 2^124557149 is an apocalyptic number.

It is an amenable number.

124557149 is a deficient number, since it is larger than the sum of its proper divisors (1).

124557149 is an equidigital number, since it uses as much as digits as its factorization.

124557149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 38.

The square root of 124557149 is about 11160.5174163208. The cubic root of 124557149 is about 499.4088333194.

The spelling of 124557149 in words is "one hundred twenty-four million, five hundred fifty-seven thousand, one hundred forty-nine".