124115729 has 2 divisors, whose sum is σ = 124115730. Its totient is φ = 124115728.

The previous prime is 124115711. The next prime is 124115731. The reversal of 124115729 is 927511421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124099600 + 16129 = 11140^2 + 127^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124115729 is a prime.

Together with 124115731, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 124115695 and 124115704.

It is not a weakly prime, because it can be changed into another prime (124165729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62057864 + 62057865.

It is an arithmetic number, because the mean of its divisors is an integer number (62057865).

Almost surely, 2^124115729 is an apocalyptic number.

It is an amenable number.

124115729 is a deficient number, since it is larger than the sum of its proper divisors (1).

124115729 is an equidigital number, since it uses as much as digits as its factorization.

124115729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 32.

The square root of 124115729 is about 11140.7238992805. The cubic root of 124115729 is about 498.8181808077.

The spelling of 124115729 in words is "one hundred twenty-four million, one hundred fifteen thousand, seven hundred twenty-nine".