42331285 has 8 divisors (see below), whose sum is σ = 51321816. Its totient is φ = 33515520.

The previous prime is 42331283. The next prime is 42331291. The reversal of 42331285 is 58213324.

42331285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 14884164 + 27447121 = 3858^2 + 5239^2 .

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

It is not a de Polignac number, because 42331285 - 2¹ = 42331283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42331283) 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 7 ways as a sum of consecutive naturals, for example, 43156 + ... + 44125.

It is an arithmetic number, because the mean of its divisors is an integer number (6415227).

Almost surely, 2^42331285 is an apocalyptic number.

It is an amenable number.

42331285 is a deficient number, since it is larger than the sum of its proper divisors (8990531).

42331285 is an equidigital number, since it uses as much as digits as its factorization.

42331285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87383.

The product of its digits is 5760, while the sum is 28.

The square root of 42331285 is about 6506.2496878002. The cubic root of 42331285 is about 348.5142049352.

The spelling of 42331285 in words is "forty-two million, three hundred thirty-one thousand, two hundred eighty-five".