1003403421 has 12 divisors (see below), whose sum is σ = 1449646848. Its totient is φ = 668803464.

The previous prime is 1003403419. The next prime is 1003403437. The reversal of 1003403421 is 1243043001.

It is not a de Polignac number, because 1003403421 - 2¹ = 1003403419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1003403394 and 1003403403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003403491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63876 + ... + 78018.

It is an arithmetic number, because the mean of its divisors is an integer number (120803904).

Almost surely, 2^1003403421 is an apocalyptic number.

It is an amenable number.

1003403421 is a deficient number, since it is larger than the sum of its proper divisors (446243427).

1003403421 is a wasteful number, since it uses less digits than its factorization.

1003403421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22032 (or 22029 counting only the distinct ones).

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

The square root of 1003403421 is about 31676.5437035040. The cubic root of 1003403421 is about 1001.1331890642.

Adding to 1003403421 its reverse (1243043001), we get a palindrome (2246446422).

The spelling of 1003403421 in words is "one billion, three million, four hundred three thousand, four hundred twenty-one".