124242340109 has 2 divisors, whose sum is σ = 124242340110. Its totient is φ = 124242340108.

The previous prime is 124242340093. The next prime is 124242340151. The reversal of 124242340109 is 901043242421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111024239209 + 13218100900 = 333203^2 + 114970^2 .

It is a cyclic number.

It is not a de Polignac number, because 124242340109 - 2⁴ = 124242340093 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124242340199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62121170054 + 62121170055.

It is an arithmetic number, because the mean of its divisors is an integer number (62121170055).

Almost surely, 2^124242340109 is an apocalyptic number.

It is an amenable number.

124242340109 is a deficient number, since it is larger than the sum of its proper divisors (1).

124242340109 is an equidigital number, since it uses as much as digits as its factorization.

124242340109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 124242340109 in words is "one hundred twenty-four billion, two hundred forty-two million, three hundred forty thousand, one hundred nine".