1244200013 has 12 divisors (see below), whose sum is σ = 1448580672. Its totient is φ = 1065539160.

The previous prime is 1244200003. The next prime is 1244200031. The reversal of 1244200013 is 3100024421.

It is a de Polignac number, because none of the positive numbers 2^k-1244200013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1244199964 and 1244200000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244200003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50006 + ... + 70632.

It is an arithmetic number, because the mean of its divisors is an integer number (120715056).

Almost surely, 2^1244200013 is an apocalyptic number.

It is an amenable number.

1244200013 is a deficient number, since it is larger than the sum of its proper divisors (204380659).

1244200013 is a wasteful number, since it uses less digits than its factorization.

1244200013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21872 (or 21865 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1244200013 is about 35273.2194873108. The cubic root of 1244200013 is about 1075.5486690429.

Adding to 1244200013 its reverse (3100024421), we get a palindrome (4344224434).

The spelling of 1244200013 in words is "one billion, two hundred forty-four million, two hundred thousand, thirteen".