124223740649 has 2 divisors, whose sum is σ = 124223740650. Its totient is φ = 124223740648.

The previous prime is 124223740633. The next prime is 124223740681. The reversal of 124223740649 is 946047322421.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 76802145424 + 47421595225 = 277132^2 + 217765^2 .

It is an emirp because it is prime and its reverse (946047322421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 124223740649 - 2⁴ = 124223740633 is a prime.

It is not a weakly prime, because it can be changed into another prime (124223740699) 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, 62111870324 + 62111870325.

It is an arithmetic number, because the mean of its divisors is an integer number (62111870325).

Almost surely, 2^124223740649 is an apocalyptic number.

It is an amenable number.

124223740649 is a deficient number, since it is larger than the sum of its proper divisors (1).

124223740649 is an equidigital number, since it uses as much as digits as its factorization.

124223740649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 44.

The spelling of 124223740649 in words is "one hundred twenty-four billion, two hundred twenty-three million, seven hundred forty thousand, six hundred forty-nine".