124123120243 has 2 divisors, whose sum is σ = 124123120244. Its totient is φ = 124123120242.

The previous prime is 124123120207. The next prime is 124123120301. The reversal of 124123120243 is 342021321421.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-124123120243 is a prime.

It is not a weakly prime, because it can be changed into another prime (124123100243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62061560121 + 62061560122.

It is an arithmetic number, because the mean of its divisors is an integer number (62061560122).

Almost surely, 2^124123120243 is an apocalyptic number.

124123120243 is a deficient number, since it is larger than the sum of its proper divisors (1).

124123120243 is an equidigital number, since it uses as much as digits as its factorization.

124123120243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 124123120243 its reverse (342021321421), we get a palindrome (466144441664).

The spelling of 124123120243 in words is "one hundred twenty-four billion, one hundred twenty-three million, one hundred twenty thousand, two hundred forty-three".