42868843 has 2 divisors, whose sum is σ = 42868844. Its totient is φ = 42868842.

The previous prime is 42868831. The next prime is 42868853. The reversal of 42868843 is 34886824.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42868843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42868843.

It is not a weakly prime, because it can be changed into another prime (42868823) 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, 21434421 + 21434422.

It is an arithmetic number, because the mean of its divisors is an integer number (21434422).

Almost surely, 2^42868843 is an apocalyptic number.

42868843 is a deficient number, since it is larger than the sum of its proper divisors (1).

42868843 is an equidigital number, since it uses as much as digits as its factorization.

42868843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 294912, while the sum is 43.

The square root of 42868843 is about 6547.4302592697. The cubic root of 42868843 is about 349.9832454565.

The spelling of 42868843 in words is "forty-two million, eight hundred sixty-eight thousand, eight hundred forty-three".