42272238 has 8 divisors (see below), whose sum is σ = 84544488. Its totient is φ = 14090744.

The previous prime is 42272233. The next prime is 42272239. The reversal of 42272238 is 83227224.

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

42272238 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42272231) 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, 3522681 + ... + 3522692.

It is an arithmetic number, because the mean of its divisors is an integer number (10568061).

Almost surely, 2^42272238 is an apocalyptic number.

42272238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42272238 is a wasteful number, since it uses less digits than its factorization.

42272238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7045378.

The product of its digits is 10752, while the sum is 30.

The square root of 42272238 is about 6501.7103903511. The cubic root of 42272238 is about 348.3520845401.

The spelling of 42272238 in words is "forty-two million, two hundred seventy-two thousand, two hundred thirty-eight".