1004004321 has 4 divisors (see below), whose sum is σ = 1338672432. Its totient is φ = 669336212.

The previous prime is 1004004319. The next prime is 1004004329. The reversal of 1004004321 is 1234004001.

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 1004004321 - 2¹ = 1004004319 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1004004321.

It is not an unprimeable number, because it can be changed into a prime (1004004329) 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, 167334051 + ... + 167334056.

It is an arithmetic number, because the mean of its divisors is an integer number (334668108).

Almost surely, 2^1004004321 is an apocalyptic number.

It is an amenable number.

1004004321 is a deficient number, since it is larger than the sum of its proper divisors (334668111).

1004004321 is an equidigital number, since it uses as much as digits as its factorization.

1004004321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334668110.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1004004321 is about 31686.0272202118. The cubic root of 1004004321 is about 1001.3329959988.

Adding to 1004004321 its reverse (1234004001), we get a palindrome (2238008322).

The spelling of 1004004321 in words is "one billion, four million, four thousand, three hundred twenty-one".