124243313 has 4 divisors (see below), whose sum is σ = 124270068. Its totient is φ = 124216560.

The previous prime is 124243303. The next prime is 124243331. The reversal of 124243313 is 313342421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56806369 + 67436944 = 7537^2 + 8212^2 .

It is a cyclic number.

It is not a de Polignac number, because 124243313 - 2⁸ = 124243057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124243303) 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 in 3 ways as a sum of consecutive naturals, for example, 4406 + ... + 16367.

It is an arithmetic number, because the mean of its divisors is an integer number (31067517).

Almost surely, 2^124243313 is an apocalyptic number.

It is an amenable number.

124243313 is a deficient number, since it is larger than the sum of its proper divisors (26755).

124243313 is an equidigital number, since it uses as much as digits as its factorization.

124243313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26754.

The product of its digits is 1728, while the sum is 23.

The square root of 124243313 is about 11146.4484478241. The cubic root of 124243313 is about 498.9890413027.

Adding to 124243313 its reverse (313342421), we get a palindrome (437585734).

The spelling of 124243313 in words is "one hundred twenty-four million, two hundred forty-three thousand, three hundred thirteen".