42845137 has 2 divisors, whose sum is σ = 42845138. Its totient is φ = 42845136.

The previous prime is 42845111. The next prime is 42845161. The reversal of 42845137 is 73154824.

42845137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35533521 + 7311616 = 5961^2 + 2704^2 .

It is a cyclic number.

It is not a de Polignac number, because 42845137 - 2⁷ = 42845009 is a prime.

It is not a weakly prime, because it can be changed into another prime (42845177) 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, 21422568 + 21422569.

It is an arithmetic number, because the mean of its divisors is an integer number (21422569).

Almost surely, 2^42845137 is an apocalyptic number.

It is an amenable number.

42845137 is a deficient number, since it is larger than the sum of its proper divisors (1).

42845137 is an equidigital number, since it uses as much as digits as its factorization.

42845137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 34.

The square root of 42845137 is about 6545.6196803664. The cubic root of 42845137 is about 349.9187212626.

The spelling of 42845137 in words is "forty-two million, eight hundred forty-five thousand, one hundred thirty-seven".