42527785 has 8 divisors (see below), whose sum is σ = 51125256. Its totient is φ = 33960960.

The previous prime is 42527747. The next prime is 42527801. The reversal of 42527785 is 58772524.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29452329 + 13075456 = 5427^2 + 3616^2 .

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

It is not a de Polignac number, because 42527785 - 2⁷ = 42527657 is a prime.

It is a super-2 number, since 2×42527785² = 3617224994012450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4486 + ... + 10255.

It is an arithmetic number, because the mean of its divisors is an integer number (6390657).

Almost surely, 2^42527785 is an apocalyptic number.

It is an amenable number.

42527785 is a deficient number, since it is larger than the sum of its proper divisors (8597471).

42527785 is a wasteful number, since it uses less digits than its factorization.

42527785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15323.

The product of its digits is 156800, while the sum is 40.

The square root of 42527785 is about 6521.3330692428. Note that the first 3 decimals coincide. The cubic root of 42527785 is about 349.0526353072.

The spelling of 42527785 in words is "forty-two million, five hundred twenty-seven thousand, seven hundred eighty-five".