420164203 has 2 divisors, whose sum is σ = 420164204. Its totient is φ = 420164202.

The previous prime is 420164189. The next prime is 420164221. The reversal of 420164203 is 302461024.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420164203 is a prime.

It is not a weakly prime, because it can be changed into another prime (420164243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210082101 + 210082102.

It is an arithmetic number, because the mean of its divisors is an integer number (210082102).

Almost surely, 2^420164203 is an apocalyptic number.

420164203 is a deficient number, since it is larger than the sum of its proper divisors (1).

420164203 is an equidigital number, since it uses as much as digits as its factorization.

420164203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 420164203 is about 20497.9072834277. The cubic root of 420164203 is about 748.9848208721.

The spelling of 420164203 in words is "four hundred twenty million, one hundred sixty-four thousand, two hundred three".