42237238 has 4 divisors (see below), whose sum is σ = 63355860. Its totient is φ = 21118618.

The previous prime is 42237233. The next prime is 42237241. The reversal of 42237238 is 83273224.

42237238 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 Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42237233) 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 as a sum of consecutive naturals, namely, 10559308 + ... + 10559311.

It is an arithmetic number, because the mean of its divisors is an integer number (15838965).

Almost surely, 2^42237238 is an apocalyptic number.

42237238 is a deficient number, since it is larger than the sum of its proper divisors (21118622).

42237238 is a wasteful number, since it uses less digits than its factorization.

42237238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21118621.

The product of its digits is 16128, while the sum is 31.

The square root of 42237238 is about 6499.0182335488. The cubic root of 42237238 is about 348.2559167002.

The spelling of 42237238 in words is "forty-two million, two hundred thirty-seven thousand, two hundred thirty-eight".