42686843 has 2 divisors, whose sum is σ = 42686844. Its totient is φ = 42686842.

The previous prime is 42686837. The next prime is 42686849. The reversal of 42686843 is 34868624.

It is a balanced prime because it is at equal distance from previous prime (42686837) and next prime (42686849).

It is a cyclic number.

It is not a de Polignac number, because 42686843 - 2⁸ = 42686587 is a prime.

It is a super-3 number, since 3×42686843³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42686843.

It is not a weakly prime, because it can be changed into another prime (42686849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21343421 + 21343422.

It is an arithmetic number, because the mean of its divisors is an integer number (21343422).

Almost surely, 2^42686843 is an apocalyptic number.

42686843 is a deficient number, since it is larger than the sum of its proper divisors (1).

42686843 is an equidigital number, since it uses as much as digits as its factorization.

42686843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 41.

The square root of 42686843 is about 6533.5168936799. The cubic root of 42686843 is about 349.4872573729.

It can be divided in two parts, 4268 and 6843, that added together give a palindrome (11111).

The spelling of 42686843 in words is "forty-two million, six hundred eighty-six thousand, eight hundred forty-three".