42536777 has 2 divisors, whose sum is σ = 42536778. Its totient is φ = 42536776.

The previous prime is 42536773. The next prime is 42536797. The reversal of 42536777 is 77763524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38738176 + 3798601 = 6224^2 + 1949^2 .

It is a cyclic number.

It is not a de Polignac number, because 42536777 - 2² = 42536773 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42536773) 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, 21268388 + 21268389.

It is an arithmetic number, because the mean of its divisors is an integer number (21268389).

Almost surely, 2^42536777 is an apocalyptic number.

It is an amenable number.

42536777 is a deficient number, since it is larger than the sum of its proper divisors (1).

42536777 is an equidigital number, since it uses as much as digits as its factorization.

42536777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 246960, while the sum is 41.

The square root of 42536777 is about 6522.0224623962. The cubic root of 42536777 is about 349.0772345985.

The spelling of 42536777 in words is "forty-two million, five hundred thirty-six thousand, seven hundred seventy-seven".