42843223 has 2 divisors, whose sum is σ = 42843224. Its totient is φ = 42843222.

The previous prime is 42843221. The next prime is 42843287. The reversal of 42843223 is 32234824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42843223 - 2¹ = 42843221 is a prime.

Together with 42843221, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 42843191 and 42843200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42843221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21421611 + 21421612.

It is an arithmetic number, because the mean of its divisors is an integer number (21421612).

Almost surely, 2^42843223 is an apocalyptic number.

42843223 is a deficient number, since it is larger than the sum of its proper divisors (1).

42843223 is an equidigital number, since it uses as much as digits as its factorization.

42843223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 28.

The square root of 42843223 is about 6545.4734740888. The cubic root of 42843223 is about 349.9135106019.

The spelling of 42843223 in words is "forty-two million, eight hundred forty-three thousand, two hundred twenty-three".