42747385 has 8 divisors (see below), whose sum is σ = 51363720. Its totient is φ = 34153344.

The previous prime is 42747373. The next prime is 42747427. The reversal of 42747385 is 58374724.

42747385 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 4108729 + 38638656 = 2027^2 + 6216^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42747385 - 2²³ = 34358777 is a prime.

It is an unprimeable number.

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, 1012 + ... + 9301.

It is an arithmetic number, because the mean of its divisors is an integer number (6420465).

Almost surely, 2^42747385 is an apocalyptic number.

It is an amenable number.

42747385 is a deficient number, since it is larger than the sum of its proper divisors (8616335).

42747385 is a wasteful number, since it uses less digits than its factorization.

42747385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11147.

The product of its digits is 188160, while the sum is 40.

The square root of 42747385 is about 6538.1484382048. The cubic root of 42747385 is about 349.6524032035.

The spelling of 42747385 in words is "forty-two million, seven hundred forty-seven thousand, three hundred eighty-five".