420444203 has 4 divisors (see below), whose sum is σ = 420754488. Its totient is φ = 420133920.

The previous prime is 420444181. The next prime is 420444223. The reversal of 420444203 is 302444024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420444203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420444223) 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, 153101 + ... + 155822.

It is an arithmetic number, because the mean of its divisors is an integer number (105188622).

Almost surely, 2^420444203 is an apocalyptic number.

420444203 is a deficient number, since it is larger than the sum of its proper divisors (310285).

420444203 is a wasteful number, since it uses less digits than its factorization.

420444203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310284.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 420444203 is about 20504.7361114451. The cubic root of 420444203 is about 749.1511599528.

Adding to 420444203 its reverse (302444024), we get a palindrome (722888227).

The spelling of 420444203 in words is "four hundred twenty million, four hundred forty-four thousand, two hundred three".