42775811 has 16 divisors (see below), whose sum is σ = 47790624. Its totient is φ = 38029824.

The previous prime is 42775801. The next prime is 42775829. The reversal of 42775811 is 11857724.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42775811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42775801) 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 in 15 ways as a sum of consecutive naturals, for example, 53960 + ... + 54746.

It is an arithmetic number, because the mean of its divisors is an integer number (2986914).

Almost surely, 2^42775811 is an apocalyptic number.

42775811 is a deficient number, since it is larger than the sum of its proper divisors (5014813).

42775811 is a wasteful number, since it uses less digits than its factorization.

42775811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 950.

The product of its digits is 15680, while the sum is 35.

The square root of 42775811 is about 6540.3219339724. The cubic root of 42775811 is about 349.7298895567.

The spelling of 42775811 in words is "forty-two million, seven hundred seventy-five thousand, eight hundred eleven".