42274777 has 2 divisors, whose sum is σ = 42274778. Its totient is φ = 42274776.

The previous prime is 42274751. The next prime is 42274807. The reversal of 42274777 is 77747224.

It is a happy number.

42274777 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., 39388176 + 2886601 = 6276^2 + 1699^2 .

It is a cyclic number.

It is not a de Polignac number, because 42274777 - 2¹¹ = 42272729 is a prime.

It is not a weakly prime, because it can be changed into another prime (42274747) 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, 21137388 + 21137389.

It is an arithmetic number, because the mean of its divisors is an integer number (21137389).

Almost surely, 2^42274777 is an apocalyptic number.

It is an amenable number.

42274777 is a deficient number, since it is larger than the sum of its proper divisors (1).

42274777 is an equidigital number, since it uses as much as digits as its factorization.

42274777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 153664, while the sum is 40.

The square root of 42274777 is about 6501.9056437325. The cubic root of 42274777 is about 348.3590587646.

The spelling of 42274777 in words is "forty-two million, two hundred seventy-four thousand, seven hundred seventy-seven".