124440013 has 4 divisors (see below), whose sum is σ = 124525408. Its totient is φ = 124354620.

The previous prime is 124440011. The next prime is 124440023. The reversal of 124440013 is 310044421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 124440013 - 2¹ = 124440011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124440011) 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, 40473 + ... + 43438.

It is an arithmetic number, because the mean of its divisors is an integer number (31131352).

Almost surely, 2^124440013 is an apocalyptic number.

It is an amenable number.

124440013 is a deficient number, since it is larger than the sum of its proper divisors (85395).

124440013 is an equidigital number, since it uses as much as digits as its factorization.

124440013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85394.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 124440013 is about 11155.2683965918. The cubic root of 124440013 is about 499.2522329129.

Adding to 124440013 its reverse (310044421), we get a palindrome (434484434).

The spelling of 124440013 in words is "one hundred twenty-four million, four hundred forty thousand, thirteen".