42866357 has 2 divisors, whose sum is σ = 42866358. Its totient is φ = 42866356.

The previous prime is 42866309. The next prime is 42866359. The reversal of 42866357 is 75366824.

It is a happy number.

42866357 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., 39513796 + 3352561 = 6286^2 + 1831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42866357 is a prime.

Together with 42866359, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42866359) 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, 21433178 + 21433179.

It is an arithmetic number, because the mean of its divisors is an integer number (21433179).

Almost surely, 2^42866357 is an apocalyptic number.

It is an amenable number.

42866357 is a deficient number, since it is larger than the sum of its proper divisors (1).

42866357 is an equidigital number, since it uses as much as digits as its factorization.

42866357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 41.

The square root of 42866357 is about 6547.2404110434. The cubic root of 42866357 is about 349.9764800522.

The spelling of 42866357 in words is "forty-two million, eight hundred sixty-six thousand, three hundred fifty-seven".