228145042 has 4 divisors (see below), whose sum is σ = 342217566. Its totient is φ = 114072520.

The previous prime is 228145031. The next prime is 228145051. The reversal of 228145042 is 240541822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240541822 = 2 ⋅120270911.

It can be written as a sum of positive squares in only one way, i.e., 128165041 + 99980001 = 11321^2 + 9999^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 228145042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57036259 + ... + 57036262.

Almost surely, 2^228145042 is an apocalyptic number.

228145042 is a deficient number, since it is larger than the sum of its proper divisors (114072524).

228145042 is a wasteful number, since it uses less digits than its factorization.

228145042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114072523.

The product of its (nonzero) digits is 5120, while the sum is 28.

The square root of 228145042 is about 15104.4709275102. The cubic root of 228145042 is about 611.0409905685.

Adding to 228145042 its reverse (240541822), we get a palindrome (468686864).

The spelling of 228145042 in words is "two hundred twenty-eight million, one hundred forty-five thousand, forty-two".