42847065 has 24 divisors (see below), whose sum is σ = 76831560. Its totient is φ = 22063104.

The previous prime is 42847037. The next prime is 42847097. The reversal of 42847065 is 56074824.

It can be written as a sum of positive squares in 4 ways, for example, as 6702921 + 36144144 = 2589^2 + 6012^2 .

It is not a de Polignac number, because 42847065 - 2¹¹ = 42845017 is a prime.

It is a super-2 number, since 2×42847065² = 3671741958228450, which contains 22 as substring.

It is a Curzon number.

It is a nialpdrome in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15112 + ... + 17721.

It is an arithmetic number, because the mean of its divisors is an integer number (3201315).

Almost surely, 2^42847065 is an apocalyptic number.

42847065 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42847065 is a deficient number, since it is larger than the sum of its proper divisors (33984495).

42847065 is a wasteful number, since it uses less digits than its factorization.

42847065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32873 (or 32870 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 42847065 is about 6545.7669527718. The cubic root of 42847065 is about 349.9239698798.

The spelling of 42847065 in words is "forty-two million, eight hundred forty-seven thousand, sixty-five".