42331865 has 8 divisors (see below), whose sum is σ = 51631368. Its totient is φ = 33310080.

The previous prime is 42331859. The next prime is 42331879. The reversal of 42331865 is 56813324.

It can be written as a sum of positive squares in 4 ways, for example, as 94864 + 42237001 = 308^2 + 6499^2 .

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

It is not a de Polignac number, because 42331865 - 2⁶ = 42331801 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69092 + ... + 69701.

It is an arithmetic number, because the mean of its divisors is an integer number (6453921).

Almost surely, 2^42331865 is an apocalyptic number.

It is an amenable number.

42331865 is a deficient number, since it is larger than the sum of its proper divisors (9299503).

42331865 is a wasteful number, since it uses less digits than its factorization.

42331865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138859.

The product of its digits is 17280, while the sum is 32.

The square root of 42331865 is about 6506.2942601761. The cubic root of 42331865 is about 348.5157966447.

The spelling of 42331865 in words is "forty-two million, three hundred thirty-one thousand, eight hundred sixty-five".