40124112013 has 2 divisors, whose sum is σ = 40124112014. Its totient is φ = 40124112012.

The previous prime is 40124111999. The next prime is 40124112029. The reversal of 40124112013 is 31021142104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22070964969 + 18053147044 = 148563^2 + 134362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40124112013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40124112073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20062056006 + 20062056007.

It is an arithmetic number, because the mean of its divisors is an integer number (20062056007).

Almost surely, 2^40124112013 is an apocalyptic number.

It is an amenable number.

40124112013 is a deficient number, since it is larger than the sum of its proper divisors (1).

40124112013 is an equidigital number, since it uses as much as digits as its factorization.

40124112013 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 40124112013 its reverse (31021142104), we get a palindrome (71145254117).

The spelling of 40124112013 in words is "forty billion, one hundred twenty-four million, one hundred twelve thousand, thirteen".