123124513 has 2 divisors, whose sum is σ = 123124514. Its totient is φ = 123124512.

The previous prime is 123124481. The next prime is 123124531. The reversal of 123124513 is 315421321.

It is a happy number.

Together with next prime (123124531) 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., 121506529 + 1617984 = 11023^2 + 1272^2 .

It is a cyclic number.

It is not a de Polignac number, because 123124513 - 2⁵ = 123124481 is a prime.

It is not a weakly prime, because it can be changed into another prime (123124553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61562256 + 61562257.

It is an arithmetic number, because the mean of its divisors is an integer number (61562257).

Almost surely, 2^123124513 is an apocalyptic number.

It is an amenable number.

123124513 is a deficient number, since it is larger than the sum of its proper divisors (1).

123124513 is an equidigital number, since it uses as much as digits as its factorization.

123124513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 123124513 is about 11096.1485660566. The cubic root of 123124513 is about 497.4867388703.

Adding to 123124513 its reverse (315421321), we get a palindrome (438545834).

The spelling of 123124513 in words is "one hundred twenty-three million, one hundred twenty-four thousand, five hundred thirteen".