124409729819 has 2 divisors, whose sum is σ = 124409729820. Its totient is φ = 124409729818.

The previous prime is 124409729711. The next prime is 124409729839. The reversal of 124409729819 is 918927904421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124409729819 is a prime.

It is a super-2 number, since 2×124409729819² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (124409729839) 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, 62204864909 + 62204864910.

It is an arithmetic number, because the mean of its divisors is an integer number (62204864910).

Almost surely, 2^124409729819 is an apocalyptic number.

124409729819 is a deficient number, since it is larger than the sum of its proper divisors (1).

124409729819 is an equidigital number, since it uses as much as digits as its factorization.

124409729819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The spelling of 124409729819 in words is "one hundred twenty-four billion, four hundred nine million, seven hundred twenty-nine thousand, eight hundred nineteen".