421423003 has 8 divisors (see below), whose sum is σ = 424121040. Its totient is φ = 418732800.

The previous prime is 421423001. The next prime is 421423019. The reversal of 421423003 is 300324124.

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

It is a cyclic number.

It is not a de Polignac number, because 421423003 - 2¹ = 421423001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421423001) 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 7 ways as a sum of consecutive naturals, for example, 134883 + ... + 137971.

It is an arithmetic number, because the mean of its divisors is an integer number (53015130).

Almost surely, 2^421423003 is an apocalyptic number.

421423003 is a deficient number, since it is larger than the sum of its proper divisors (2698037).

421423003 is a wasteful number, since it uses less digits than its factorization.

421423003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3917.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 421423003 is about 20528.5898931222. The cubic root of 421423003 is about 749.7320542107.

Adding to 421423003 its reverse (300324124), we get a palindrome (721747127).

The spelling of 421423003 in words is "four hundred twenty-one million, four hundred twenty-three thousand, three".