42856265 has 4 divisors (see below), whose sum is σ = 51427524. Its totient is φ = 34285008.

The previous prime is 42856223. The next prime is 42856301. The reversal of 42856265 is 56265824.

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 27237961 + 15618304 = 5219^2 + 3952^2 .

It is a cyclic number.

It is not a de Polignac number, because 42856265 - 2¹⁶ = 42790729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4285622 + ... + 4285631.

It is an arithmetic number, because the mean of its divisors is an integer number (12856881).

Almost surely, 2^42856265 is an apocalyptic number.

It is an amenable number.

42856265 is a deficient number, since it is larger than the sum of its proper divisors (8571259).

42856265 is an equidigital number, since it uses as much as digits as its factorization.

42856265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8571258.

The product of its digits is 115200, while the sum is 38.

The square root of 42856265 is about 6546.4696592897. The cubic root of 42856265 is about 349.9490129809.

The spelling of 42856265 in words is "forty-two million, eight hundred fifty-six thousand, two hundred sixty-five".