1004421 has 12 divisors (see below), whose sum is σ = 1472576. Its totient is φ = 608520.

The previous prime is 1004401. The next prime is 1004429. The reversal of 1004421 is 1244001.

It is not a de Polignac number, because 1004421 - 2⁷ = 1004293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1004397 and 1004406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1021 + ... + 1746.

2^1004421 is an apocalyptic number.

1004421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1004421 is a deficient number, since it is larger than the sum of its proper divisors (468155).

1004421 is a wasteful number, since it uses less digits than its factorization.

1004421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2792 (or 2781 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1004421 is about 1002.2080622306. The cubic root of 1004421 is about 100.1471500291.

Adding to 1004421 its reverse (1244001), we get a palindrome (2248422).

The spelling of 1004421 in words is "one million, four thousand, four hundred twenty-one".