42865633 has 4 divisors (see below), whose sum is σ = 42878740. Its totient is φ = 42852528.

The previous prime is 42865621. The next prime is 42865639. The reversal of 42865633 is 33656824.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 34845409 + 8020224 = 5903^2 + 2832^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42865633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42865592 and 42865601.

It is not an unprimeable number, because it can be changed into a prime (42865639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2863 + ... + 9691.

It is an arithmetic number, because the mean of its divisors is an integer number (10719685).

Almost surely, 2^42865633 is an apocalyptic number.

It is an amenable number.

42865633 is a deficient number, since it is larger than the sum of its proper divisors (13107).

42865633 is an equidigital number, since it uses as much as digits as its factorization.

42865633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13106.

The product of its digits is 103680, while the sum is 37.

The square root of 42865633 is about 6547.1851203399. The cubic root of 42865633 is about 349.9745097082.

The spelling of 42865633 in words is "forty-two million, eight hundred sixty-five thousand, six hundred thirty-three".