1244042013 has 8 divisors (see below), whose sum is σ = 1694014848. Its totient is φ = 811715264.

The previous prime is 1244042011. The next prime is 1244042017. The reversal of 1244042013 is 3102404421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1244042013 - 2¹ = 1244042011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244042011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4411356 + ... + 4411637.

It is an arithmetic number, because the mean of its divisors is an integer number (211751856).

Almost surely, 2^1244042013 is an apocalyptic number.

It is an amenable number.

1244042013 is a deficient number, since it is larger than the sum of its proper divisors (449972835).

1244042013 is an equidigital number, since it uses as much as digits as its factorization.

1244042013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8823043.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1244042013 is about 35270.9797567349. The cubic root of 1244042013 is about 1075.5031394170.

Adding to 1244042013 its reverse (3102404421), we get a palindrome (4346446434).

The spelling of 1244042013 in words is "one billion, two hundred forty-four million, forty-two thousand, thirteen".