42685297 has 2 divisors, whose sum is σ = 42685298. Its totient is φ = 42685296.

The previous prime is 42685289. The next prime is 42685319. The reversal of 42685297 is 79258624.

42685297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36529936 + 6155361 = 6044^2 + 2481^2 .

It is a cyclic number.

It is not a de Polignac number, because 42685297 - 2³ = 42685289 is a prime.

It is a super-3 number, since 3×42685297³ (a number of 24 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (42685207) 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, 21342648 + 21342649.

It is an arithmetic number, because the mean of its divisors is an integer number (21342649).

Almost surely, 2^42685297 is an apocalyptic number.

It is an amenable number.

42685297 is a deficient number, since it is larger than the sum of its proper divisors (1).

42685297 is an equidigital number, since it uses as much as digits as its factorization.

42685297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 42685297 is about 6533.3985796062. The cubic root of 42685297 is about 349.4830381664.

The spelling of 42685297 in words is "forty-two million, six hundred eighty-five thousand, two hundred ninety-seven".