1004330421 has 12 divisors (see below), whose sum is σ = 1504429472. Its totient is φ = 669553452.

The previous prime is 1004330387. The next prime is 1004330441. The reversal of 1004330421 is 1240334001.

It is not a de Polignac number, because 1004330421 - 2⁷ = 1004330293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1004330394 and 1004330403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004330441) 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, 2066281 + ... + 2066766.

Almost surely, 2^1004330421 is an apocalyptic number.

It is an amenable number.

1004330421 is a deficient number, since it is larger than the sum of its proper divisors (500099051).

1004330421 is an frugal number, since it uses more digits than its factorization.

1004330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133062 (or 4133050 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1004330421 is about 31691.1726037394. The cubic root of 1004330421 is about 1001.4413950488.

Adding to 1004330421 its reverse (1240334001), we get a palindrome (2244664422).

The spelling of 1004330421 in words is "one billion, four million, three hundred thirty thousand, four hundred twenty-one".