228240242 has 4 divisors (see below), whose sum is σ = 342360366. Its totient is φ = 114120120.

The previous prime is 228240241. The next prime is 228240253. The reversal of 228240242 is 242042822.

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

It can be written as a sum of positive squares in only one way, i.e., 216413521 + 11826721 = 14711^2 + 3439^2 .

It is not an unprimeable number, because it can be changed into a prime (228240241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57060059 + ... + 57060062.

Almost surely, 2^228240242 is an apocalyptic number.

228240242 is a deficient number, since it is larger than the sum of its proper divisors (114120124).

228240242 is a wasteful number, since it uses less digits than its factorization.

228240242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114120123.

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 228240242 is about 15107.6219836214. The cubic root of 228240242 is about 611.1259701535.

It can be divided in two parts, 2282 and 40242, that added together give a palindrome (42524).

The spelling of 228240242 in words is "two hundred twenty-eight million, two hundred forty thousand, two hundred forty-two".