42877811 has 2 divisors, whose sum is σ = 42877812. Its totient is φ = 42877810.

The previous prime is 42877801. The next prime is 42877817. The reversal of 42877811 is 11877824.

42877811 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 is a cyclic number.

It is not a de Polignac number, because 42877811 - 2¹⁸ = 42615667 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42877817) 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, 21438905 + 21438906.

It is an arithmetic number, because the mean of its divisors is an integer number (21438906).

Almost surely, 2^42877811 is an apocalyptic number.

42877811 is a deficient number, since it is larger than the sum of its proper divisors (1).

42877811 is an equidigital number, since it uses as much as digits as its factorization.

42877811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25088, while the sum is 38.

The square root of 42877811 is about 6548.1150722937. The cubic root of 42877811 is about 350.0076488124.

The spelling of 42877811 in words is "forty-two million, eight hundred seventy-seven thousand, eight hundred eleven".