42686263 has 2 divisors, whose sum is σ = 42686264. Its totient is φ = 42686262.

The previous prime is 42686261. The next prime is 42686297. The reversal of 42686263 is 36268624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42686263 - 2¹ = 42686261 is a prime.

It is a super-3 number, since 3×42686263³ (a number of 24 digits) contains 333 as substring.

Together with 42686261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42686261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21343131 + 21343132.

It is an arithmetic number, because the mean of its divisors is an integer number (21343132).

Almost surely, 2^42686263 is an apocalyptic number.

42686263 is a deficient number, since it is larger than the sum of its proper divisors (1).

42686263 is an equidigital number, since it uses as much as digits as its factorization.

42686263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 37.

The square root of 42686263 is about 6533.4725070211. The cubic root of 42686263 is about 349.4856745001.

The spelling of 42686263 in words is "forty-two million, six hundred eighty-six thousand, two hundred sixty-three".