228042 has 32 divisors (see below), whose sum is σ = 524160. Its totient is φ = 73440.

The previous prime is 228023. The next prime is 228049. The reversal of 228042 is 240822.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (228049) by changing a digit.

228042 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2163 + ... + 2265.

It is an arithmetic number, because the mean of its divisors is an integer number (16380).

2²²⁸⁰⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262080).

228042 is an abundant number, since it is smaller than the sum of its proper divisors (296118).

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

228042 is a wasteful number, since it uses less digits than its factorization.

228042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 149 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 228042 is about 477.5374330877. The cubic root of 228042 is about 61.0948984234.

Adding to 228042 its reverse (240822), we get a palindrome (468864).

The spelling of 228042 in words is "two hundred twenty-eight thousand, forty-two".