143421203 has 2 divisors, whose sum is σ = 143421204. Its totient is φ = 143421202.

The previous prime is 143421199. The next prime is 143421209. The reversal of 143421203 is 302124341.

It is a weak prime.

It is an emirp because it is prime and its reverse (302124341) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 143421203 - 2² = 143421199 is a prime.

It is not a weakly prime, because it can be changed into another prime (143421209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71710601 + 71710602.

It is an arithmetic number, because the mean of its divisors is an integer number (71710602).

Almost surely, 2^143421203 is an apocalyptic number.

143421203 is a deficient number, since it is larger than the sum of its proper divisors (1).

143421203 is an equidigital number, since it uses as much as digits as its factorization.

143421203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 143421203 is about 11975.8591758587. The cubic root of 143421203 is about 523.4450778551.

Adding to 143421203 its reverse (302124341), we get a palindrome (445545544).

The spelling of 143421203 in words is "one hundred forty-three million, four hundred twenty-one thousand, two hundred three".