421424203 has 8 divisors (see below), whose sum is σ = 446528160. Its totient is φ = 396355200.

The previous prime is 421424177. The next prime is 421424219. The reversal of 421424203 is 302424124.

It is a happy number.

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-421424203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421424243) 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, 18553 + ... + 34453.

It is an arithmetic number, because the mean of its divisors is an integer number (55816020).

Almost surely, 2^421424203 is an apocalyptic number.

421424203 is a deficient number, since it is larger than the sum of its proper divisors (25103957).

421424203 is a wasteful number, since it uses less digits than its factorization.

421424203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17477.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 421424203 is about 20528.6191206325. The cubic root of 421424203 is about 749.7327658295.

Adding to 421424203 its reverse (302424124), we get a palindrome (723848327).

The spelling of 421424203 in words is "four hundred twenty-one million, four hundred twenty-four thousand, two hundred three".