124136630909 has 2 divisors, whose sum is σ = 124136630910. Its totient is φ = 124136630908.

The previous prime is 124136630879. The next prime is 124136630921. The reversal of 124136630909 is 909036631421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87752212900 + 36384418009 = 296230^2 + 190747^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124136630909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 124136630909.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124136630939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62068315454 + 62068315455.

It is an arithmetic number, because the mean of its divisors is an integer number (62068315455).

Almost surely, 2^124136630909 is an apocalyptic number.

It is an amenable number.

124136630909 is a deficient number, since it is larger than the sum of its proper divisors (1).

124136630909 is an equidigital number, since it uses as much as digits as its factorization.

124136630909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 44.

The spelling of 124136630909 in words is "one hundred twenty-four billion, one hundred thirty-six million, six hundred thirty thousand, nine hundred nine".