42320203 has 2 divisors, whose sum is σ = 42320204. Its totient is φ = 42320202.

The previous prime is 42320143. The next prime is 42320237. The reversal of 42320203 is 30202324.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42320203 is a prime.

It is a super-2 number, since 2×42320203² = 3581999163922418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42320273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21160101 + 21160102.

It is an arithmetic number, because the mean of its divisors is an integer number (21160102).

Almost surely, 2^42320203 is an apocalyptic number.

42320203 is a deficient number, since it is larger than the sum of its proper divisors (1).

42320203 is an equidigital number, since it uses as much as digits as its factorization.

42320203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 42320203 is about 6505.3979893624. The cubic root of 42320203 is about 348.4837895147.

Adding to 42320203 its reverse (30202324), we get a palindrome (72522527).

The spelling of 42320203 in words is "forty-two million, three hundred twenty thousand, two hundred three".