1003320421 has 8 divisors (see below), whose sum is σ = 1069219584. Its totient is φ = 939277680.

The previous prime is 1003320413. The next prime is 1003320427. The reversal of 1003320421 is 1240233001.

It is a happy number.

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

It is not a de Polignac number, because 1003320421 - 2³ = 1003320413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1003320395 and 1003320404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003320427) 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, 462990 + ... + 465151.

It is an arithmetic number, because the mean of its divisors is an integer number (133652448).

Almost surely, 2^1003320421 is an apocalyptic number.

It is an amenable number.

1003320421 is a deficient number, since it is larger than the sum of its proper divisors (65899163).

1003320421 is an equidigital number, since it uses as much as digits as its factorization.

1003320421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928211.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1003320421 is about 31675.2335587285. The cubic root of 1003320421 is about 1001.1055842330.

Adding to 1003320421 its reverse (1240233001), we get a palindrome (2243553422).

The spelling of 1003320421 in words is "one billion, three million, three hundred twenty thousand, four hundred twenty-one".