1003004421 has 16 divisors (see below), whose sum is σ = 1357259904. Its totient is φ = 658776384.

The previous prime is 1003004419. The next prime is 1003004423. The reversal of 1003004421 is 1244003001.

It is an interprime number because it is at equal distance from previous prime (1003004419) and next prime (1003004423).

It is not a de Polignac number, because 1003004421 - 2¹ = 1003004419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1003004421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003004423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52635 + ... + 69111.

It is an arithmetic number, because the mean of its divisors is an integer number (84828744).

Almost surely, 2^1003004421 is an apocalyptic number.

It is an amenable number.

1003004421 is a deficient number, since it is larger than the sum of its proper divisors (354255483).

1003004421 is a wasteful number, since it uses less digits than its factorization.

1003004421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16780.

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

The square root of 1003004421 is about 31670.2450416791. The cubic root of 1003004421 is about 1001.0004723879. Note that the first 3 decimals are identical.

Adding to 1003004421 its reverse (1244003001), we get a palindrome (2247007422).

The spelling of 1003004421 in words is "one billion, three million, four thousand, four hundred twenty-one".