421313003 has 4 divisors (see below), whose sum is σ = 427084488. Its totient is φ = 415541520.

The previous prime is 421312999. The next prime is 421313051. The reversal of 421313003 is 300313124.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421313003 - 2² = 421312999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421313093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2885633 + ... + 2885778.

It is an arithmetic number, because the mean of its divisors is an integer number (106771122).

Almost surely, 2^421313003 is an apocalyptic number.

421313003 is a deficient number, since it is larger than the sum of its proper divisors (5771485).

421313003 is an equidigital number, since it uses as much as digits as its factorization.

421313003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5771484.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 421313003 is about 20525.9105279157. The cubic root of 421313003 is about 749.6668167479. Note that the first 3 decimals are identical.

Adding to 421313003 its reverse (300313124), we get a palindrome (721626127).

The spelling of 421313003 in words is "four hundred twenty-one million, three hundred thirteen thousand, three".