124102109 has 2 divisors, whose sum is σ = 124102110. Its totient is φ = 124102108.

The previous prime is 124102103. The next prime is 124102141. The reversal of 124102109 is 901201421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123698884 + 403225 = 11122^2 + 635^2 .

It is an emirp because it is prime and its reverse (901201421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124102109 - 2²⁰ = 123053533 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 (124102103) 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, 62051054 + 62051055.

It is an arithmetic number, because the mean of its divisors is an integer number (62051055).

Almost surely, 2^124102109 is an apocalyptic number.

It is an amenable number.

124102109 is a deficient number, since it is larger than the sum of its proper divisors (1).

124102109 is an equidigital number, since it uses as much as digits as its factorization.

124102109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 124102109 is about 11140.1126116391. The cubic root of 124102109 is about 498.7999339875.

The spelling of 124102109 in words is "one hundred twenty-four million, one hundred two thousand, one hundred nine".