42285239 has 4 divisors (see below), whose sum is σ = 44772624. Its totient is φ = 39797856.

The previous prime is 42285197. The next prime is 42285253. The reversal of 42285239 is 93258224.

42285239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42285239 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42285199 and 42285208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42285739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243667 + ... + 1243700.

It is an arithmetic number, because the mean of its divisors is an integer number (11193156).

Almost surely, 2^42285239 is an apocalyptic number.

42285239 is a deficient number, since it is larger than the sum of its proper divisors (2487385).

42285239 is a wasteful number, since it uses less digits than its factorization.

42285239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487384.

The product of its digits is 34560, while the sum is 35.

The square root of 42285239 is about 6502.7101273238. The cubic root of 42285239 is about 348.3877932499.

It can be divided in two parts, 42285 and 239, that added together give a palindrome (42524).

The spelling of 42285239 in words is "forty-two million, two hundred eighty-five thousand, two hundred thirty-nine".