124124142749 has 2 divisors, whose sum is σ = 124124142750. Its totient is φ = 124124142748.

The previous prime is 124124142707. The next prime is 124124142767. The reversal of 124124142749 is 947241421421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67459672900 + 56664469849 = 259730^2 + 238043^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124124142749 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 (124124102749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62062071374 + 62062071375.

It is an arithmetic number, because the mean of its divisors is an integer number (62062071375).

Almost surely, 2^124124142749 is an apocalyptic number.

It is an amenable number.

124124142749 is a deficient number, since it is larger than the sum of its proper divisors (1).

124124142749 is an equidigital number, since it uses as much as digits as its factorization.

124124142749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 41.

The spelling of 124124142749 in words is "one hundred twenty-four billion, one hundred twenty-four million, one hundred forty-two thousand, seven hundred forty-nine".