1003443421 has 8 divisors (see below), whose sum is σ = 1008794720. Its totient is φ = 998101008.

The previous prime is 1003443361. The next prime is 1003443439. The reversal of 1003443421 is 1243443001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1003443421 - 2¹⁹ = 1002919133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1003443392 and 1003443401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003443491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426370 + ... + 428716.

It is an arithmetic number, because the mean of its divisors is an integer number (126099340).

Almost surely, 2^1003443421 is an apocalyptic number.

It is an amenable number.

1003443421 is a deficient number, since it is larger than the sum of its proper divisors (5351299).

1003443421 is a wasteful number, since it uses less digits than its factorization.

1003443421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4443.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1003443421 is about 31677.1750792270. The cubic root of 1003443421 is about 1001.1464920536.

Adding to 1003443421 its reverse (1243443001), we get a palindrome (2246886422).

The spelling of 1003443421 in words is "one billion, three million, four hundred forty-three thousand, four hundred twenty-one".