4242865 has 12 divisors (see below), whose sum is σ = 5597172. Its totient is φ = 3085280.

The previous prime is 4242859. The next prime is 4242869. The reversal of 4242865 is 5682424.

It can be written as a sum of positive squares in 2 ways, for example, as 2614689 + 1628176 = 1617^2 + 1276^2 .

It is not a de Polignac number, because 4242865 - 2⁹ = 4242353 is a prime.

It is a d-powerful number, because it can be written as 4 + 2¹⁵ + 4³ + 2²² + 8² + 6² + 5⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4242869) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2902 + ... + 4111.

It is an arithmetic number, because the mean of its divisors is an integer number (466431).

Almost surely, 2^4242865 is an apocalyptic number.

It is an amenable number.

4242865 is a deficient number, since it is larger than the sum of its proper divisors (1354307).

4242865 is a wasteful number, since it uses less digits than its factorization.

4242865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7040 (or 7029 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 4242865 is about 2059.8215942164. The cubic root of 4242865 is about 161.8898936819.

The spelling of 4242865 in words is "four million, two hundred forty-two thousand, eight hundred sixty-five".