42238 has 12 divisors (see below), whose sum is σ = 73872. Its totient is φ = 18060.

The previous prime is 42227. The next prime is 42239. The reversal of 42238 is 83224.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42239) by changing a digit.

42238 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118 + ... + 313.

It is an arithmetic number, because the mean of its divisors is an integer number (6156).

2⁴²²³⁸ is an apocalyptic number.

42238 is a deficient number, since it is larger than the sum of its proper divisors (31634).

42238 is a wasteful number, since it uses less digits than its factorization.

42238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 440 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 42238 is about 205.5188555826. The cubic root of 42238 is about 34.8258010977.

The spelling of 42238 in words is "forty-two thousand, two hundred thirty-eight".