124121040013 has 2 divisors, whose sum is σ = 124121040014. Its totient is φ = 124121040012.

The previous prime is 124121039963. The next prime is 124121040031. The reversal of 124121040013 is 310040121421.

Together with next prime (124121040031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107855098569 + 16265941444 = 328413^2 + 127538^2 .

It is a cyclic number.

It is not a de Polignac number, because 124121040013 - 2⁹ = 124121039501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (124121040083) 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, 62060520006 + 62060520007.

It is an arithmetic number, because the mean of its divisors is an integer number (62060520007).

Almost surely, 2^124121040013 is an apocalyptic number.

It is an amenable number.

124121040013 is a deficient number, since it is larger than the sum of its proper divisors (1).

124121040013 is an equidigital number, since it uses as much as digits as its factorization.

124121040013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 124121040013 its reverse (310040121421), we get a palindrome (434161161434).

The spelling of 124121040013 in words is "one hundred twenty-four billion, one hundred twenty-one million, forty thousand, thirteen".