124444243213 has 4 divisors (see below), whose sum is σ = 124528271868. Its totient is φ = 124360214560.

The previous prime is 124444243177. The next prime is 124444243219. The reversal of 124444243213 is 312342444421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312342444421 = 7 ⋅44620349203.

It can be written as a sum of positive squares in 2 ways, for example, as 92441537764 + 32002705449 = 304042^2 + 178893^2 .

It is a cyclic number.

It is not a de Polignac number, because 124444243213 - 2⁹ = 124444242701 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 (124444243219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42012106 + ... + 42015067.

It is an arithmetic number, because the mean of its divisors is an integer number (31132067967).

Almost surely, 2^124444243213 is an apocalyptic number.

It is an amenable number.

124444243213 is a deficient number, since it is larger than the sum of its proper divisors (84028655).

124444243213 is an equidigital number, since it uses as much as digits as its factorization.

124444243213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84028654.

The product of its digits is 73728, while the sum is 34.

Adding to 124444243213 its reverse (312342444421), we get a palindrome (436786687634).

The spelling of 124444243213 in words is "one hundred twenty-four billion, four hundred forty-four million, two hundred forty-three thousand, two hundred thirteen".