42766057 has 4 divisors (see below), whose sum is σ = 43078356. Its totient is φ = 42453760.

The previous prime is 42766051. The next prime is 42766079. The reversal of 42766057 is 75066724.

42766057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34762816 + 8003241 = 5896^2 + 2829^2 .

It is a cyclic number.

It is not a de Polignac number, because 42766057 - 2³ = 42766049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42766051) 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 in 3 ways as a sum of consecutive naturals, for example, 155944 + ... + 156217.

It is an arithmetic number, because the mean of its divisors is an integer number (10769589).

Almost surely, 2^42766057 is an apocalyptic number.

It is an amenable number.

42766057 is a deficient number, since it is larger than the sum of its proper divisors (312299).

42766057 is a wasteful number, since it uses less digits than its factorization.

42766057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312298.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 42766057 is about 6539.5762095108. The cubic root of 42766057 is about 349.7033050253.

The spelling of 42766057 in words is "forty-two million, seven hundred sixty-six thousand, fifty-seven".