421232003 has 4 divisors (see below), whose sum is σ = 422994720. Its totient is φ = 419469288.

The previous prime is 421231997. The next prime is 421232017. The reversal of 421232003 is 300232124.

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 421232003 - 2²⁶ = 354123139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421232083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 881000 + ... + 881477.

It is an arithmetic number, because the mean of its divisors is an integer number (105748680).

Almost surely, 2^421232003 is an apocalyptic number.

421232003 is a deficient number, since it is larger than the sum of its proper divisors (1762717).

421232003 is a wasteful number, since it uses less digits than its factorization.

421232003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762716.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 421232003 is about 20523.9373171914. The cubic root of 421232003 is about 749.6187709928.

Adding to 421232003 its reverse (300232124), we get a palindrome (721464127).

The spelling of 421232003 in words is "four hundred twenty-one million, two hundred thirty-two thousand, three".