420340203 has 24 divisors (see below), whose sum is σ = 643961760. Its totient is φ = 263640960.

The previous prime is 420340201. The next prime is 420340243. The reversal of 420340203 is 302043024.

420340203 is a `hidden beast` number, since 420 + 3 + 40 + 203 = 666.

It is not a de Polignac number, because 420340203 - 2¹ = 420340201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420340201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4018 + ... + 29271.

It is an arithmetic number, because the mean of its divisors is an integer number (26831740).

Almost surely, 2^420340203 is an apocalyptic number.

420340203 is a deficient number, since it is larger than the sum of its proper divisors (223621557).

420340203 is a wasteful number, since it uses less digits than its factorization.

420340203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33379 (or 33376 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 420340203 is about 20502.1999551268. The cubic root of 420340203 is about 749.0893854891.

Adding to 420340203 its reverse (302043024), we get a palindrome (722383227).

The spelling of 420340203 in words is "four hundred twenty million, three hundred forty thousand, two hundred three".