124040513 has 2 divisors, whose sum is σ = 124040514. Its totient is φ = 124040512.

The previous prime is 124040503. The next prime is 124040549. The reversal of 124040513 is 315040421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124032769 + 7744 = 11137^2 + 88^2 .

It is a cyclic number.

It is not a de Polignac number, because 124040513 - 2²⁰ = 122991937 is a prime.

It is not a weakly prime, because it can be changed into another prime (124040503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62020256 + 62020257.

It is an arithmetic number, because the mean of its divisors is an integer number (62020257).

Almost surely, 2^124040513 is an apocalyptic number.

It is an amenable number.

124040513 is a deficient number, since it is larger than the sum of its proper divisors (1).

124040513 is an equidigital number, since it uses as much as digits as its factorization.

124040513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 124040513 is about 11137.3476645025. The cubic root of 124040513 is about 498.7173966707.

Adding to 124040513 its reverse (315040421), we get a palindrome (439080934).

The spelling of 124040513 in words is "one hundred twenty-four million, forty thousand, five hundred thirteen".