420143203 has 2 divisors, whose sum is σ = 420143204. Its totient is φ = 420143202.

The previous prime is 420143201. The next prime is 420143233. The reversal of 420143203 is 302341024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420143203 - 2¹ = 420143201 is a prime.

It is a super-2 number, since 2×420143203² = 353040622054198418, which contains 22 as substring.

Together with 420143201, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (420143201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210071601 + 210071602.

It is an arithmetic number, because the mean of its divisors is an integer number (210071602).

Almost surely, 2^420143203 is an apocalyptic number.

420143203 is a deficient number, since it is larger than the sum of its proper divisors (1).

420143203 is an equidigital number, since it uses as much as digits as its factorization.

420143203 is an evil number, because the sum of its binary digits is even.

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

The square root of 420143203 is about 20497.3950296129. The cubic root of 420143203 is about 748.9723424624.

Adding to 420143203 its reverse (302341024), we get a palindrome (722484227).

The spelling of 420143203 in words is "four hundred twenty million, one hundred forty-three thousand, two hundred three".