1003421405 has 8 divisors (see below), whose sum is σ = 1376120832. Its totient is φ = 688060368.

The previous prime is 1003421399. The next prime is 1003421449. The reversal of 1003421405 is 5041243001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1003421405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14334557 + ... + 14334626.

It is an arithmetic number, because the mean of its divisors is an integer number (172015104).

Almost surely, 2^1003421405 is an apocalyptic number.

It is an amenable number.

1003421405 is a deficient number, since it is larger than the sum of its proper divisors (372699427).

1003421405 is an equidigital number, since it uses as much as digits as its factorization.

1003421405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28669195.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1003421405 is about 31676.8275715861. The cubic root of 1003421405 is about 1001.1391701320.

Adding to 1003421405 its reverse (5041243001), we get a palindrome (6044664406).

The spelling of 1003421405 in words is "one billion, three million, four hundred twenty-one thousand, four hundred five".