228039142 has 16 divisors (see below), whose sum is σ = 344375280. Its totient is φ = 113250528.

The previous prime is 228039127. The next prime is 228039157. The reversal of 228039142 is 241930822.

It is an interprime number because it is at equal distance from previous prime (228039127) and next prime (228039157).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308209 + ... + 308947.

It is an arithmetic number, because the mean of its divisors is an integer number (21523455).

Almost surely, 2^228039142 is an apocalyptic number.

228039142 is a deficient number, since it is larger than the sum of its proper divisors (116336138).

228039142 is a wasteful number, since it uses less digits than its factorization.

228039142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 228039142 is about 15100.9649360562. The cubic root of 228039142 is about 610.9464319270.

Adding to 228039142 its reverse (241930822), we get a palindrome (469969964).

The spelling of 228039142 in words is "two hundred twenty-eight million, thirty-nine thousand, one hundred forty-two".