42340213 has 2 divisors, whose sum is σ = 42340214. Its totient is φ = 42340212.

The previous prime is 42340169. The next prime is 42340223. The reversal of 42340213 is 31204324.

42340213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32341969 + 9998244 = 5687^2 + 3162^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42340213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42340223) 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, 21170106 + 21170107.

It is an arithmetic number, because the mean of its divisors is an integer number (21170107).

Almost surely, 2^42340213 is an apocalyptic number.

It is an amenable number.

42340213 is a deficient number, since it is larger than the sum of its proper divisors (1).

42340213 is an equidigital number, since it uses as much as digits as its factorization.

42340213 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 19.

The square root of 42340213 is about 6506.9357611705. The cubic root of 42340213 is about 348.5387046726.

Adding to 42340213 its reverse (31204324), we get a palindrome (73544537).

The spelling of 42340213 in words is "forty-two million, three hundred forty thousand, two hundred thirteen".