42866897 has 2 divisors, whose sum is σ = 42866898. Its totient is φ = 42866896.

The previous prime is 42866891. The next prime is 42866921. The reversal of 42866897 is 79866824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35473936 + 7392961 = 5956^2 + 2719^2 .

It is a cyclic number.

It is not a de Polignac number, because 42866897 - 2¹⁰ = 42865873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42866891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21433448 + 21433449.

It is an arithmetic number, because the mean of its divisors is an integer number (21433449).

Almost surely, 2^42866897 is an apocalyptic number.

It is an amenable number.

42866897 is a deficient number, since it is larger than the sum of its proper divisors (1).

42866897 is an equidigital number, since it uses as much as digits as its factorization.

42866897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 50.

The square root of 42866897 is about 6547.2816496619. The cubic root of 42866897 is about 349.9779496312.

The spelling of 42866897 in words is "forty-two million, eight hundred sixty-six thousand, eight hundred ninety-seven".