1004042513 has 4 divisors (see below), whose sum is σ = 1004121600. Its totient is φ = 1003963428.

The previous prime is 1004042509. The next prime is 1004042531. The reversal of 1004042513 is 3152404001.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1004042513 - 2² = 1004042509 is a prime.

It is a super-2 number, since 2×1004042513² = 2016202735822710338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1004042573) 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, 15713 + ... + 47486.

It is an arithmetic number, because the mean of its divisors is an integer number (251030400).

Almost surely, 2^1004042513 is an apocalyptic number.

It is an amenable number.

1004042513 is a deficient number, since it is larger than the sum of its proper divisors (79087).

1004042513 is an equidigital number, since it uses as much as digits as its factorization.

1004042513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79086.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1004042513 is about 31686.6298775998. The cubic root of 1004042513 is about 1001.3456926324.

Adding to 1004042513 its reverse (3152404001), we get a palindrome (4156446514).

The spelling of 1004042513 in words is "one billion, four million, forty-two thousand, five hundred thirteen".