42747770 has 16 divisors (see below), whose sum is σ = 82865160. Its totient is φ = 15783744.

The previous prime is 42747743. The next prime is 42747773. The reversal of 42747770 is 7774724.

42747770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 35058241 + 7689529 = 5921^2 + 2773^2 .

It is not an unprimeable number, because it can be changed into a prime (42747773) 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 7 ways as a sum of consecutive naturals, for example, 164285 + ... + 164544.

Almost surely, 2^42747770 is an apocalyptic number.

42747770 is a deficient number, since it is larger than the sum of its proper divisors (40117390).

42747770 is a wasteful number, since it uses less digits than its factorization.

42747770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328849.

The product of its (nonzero) digits is 76832, while the sum is 38.

The square root of 42747770 is about 6538.1778807249. The cubic root of 42747770 is about 349.6534529034.

The spelling of 42747770 in words is "forty-two million, seven hundred forty-seven thousand, seven hundred seventy".