42238265 has 4 divisors (see below), whose sum is σ = 50685924. Its totient is φ = 33790608.

The previous prime is 42238253. The next prime is 42238267. The reversal of 42238265 is 56283224.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20214016 + 22024249 = 4496^2 + 4693^2 .

It is a cyclic number.

It is not a de Polignac number, because 42238265 - 2⁴ = 42238249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42238267) 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, 4223822 + ... + 4223831.

It is an arithmetic number, because the mean of its divisors is an integer number (12671481).

Almost surely, 2^42238265 is an apocalyptic number.

It is an amenable number.

42238265 is a deficient number, since it is larger than the sum of its proper divisors (8447659).

42238265 is an equidigital number, since it uses as much as digits as its factorization.

42238265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8447658.

The product of its digits is 23040, while the sum is 32.

The square root of 42238265 is about 6499.0972450026. The cubic root of 42238265 is about 348.2587392958.

The spelling of 42238265 in words is "forty-two million, two hundred thirty-eight thousand, two hundred sixty-five".