42866137 has 2 divisors, whose sum is σ = 42866138. Its totient is φ = 42866136.

The previous prime is 42866099. The next prime is 42866171. The reversal of 42866137 is 73166824.

42866137 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., 26512201 + 16353936 = 5149^2 + 4044^2 .

It is a cyclic number.

It is not a de Polignac number, because 42866137 - 2¹⁵ = 42833369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42866096 and 42866105.

It is not a weakly prime, because it can be changed into another prime (42864137) 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, 21433068 + 21433069.

It is an arithmetic number, because the mean of its divisors is an integer number (21433069).

Almost surely, 2^42866137 is an apocalyptic number.

It is an amenable number.

42866137 is a deficient number, since it is larger than the sum of its proper divisors (1).

42866137 is an equidigital number, since it uses as much as digits as its factorization.

42866137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 42866137 is about 6547.2236100503. The cubic root of 42866137 is about 349.9758813312.

The spelling of 42866137 in words is "forty-two million, eight hundred sixty-six thousand, one hundred thirty-seven".