142811228 has 24 divisors (see below), whose sum is σ = 286669152. Its totient is φ = 60980544.

The previous prime is 142811197. The next prime is 142811233. The reversal of 142811228 is 822118241.

142811228 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 142811228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1451 + ... + 16962.

It is an arithmetic number, because the mean of its divisors is an integer number (11944548).

Almost surely, 2^142811228 is an apocalyptic number.

It is an amenable number.

142811228 is an abundant number, since it is smaller than the sum of its proper divisors (143857924).

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

142811228 is a wasteful number, since it uses less digits than its factorization.

142811228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18701 (or 18699 counting only the distinct ones).

The product of its digits is 2048, while the sum is 29.

The square root of 142811228 is about 11950.3651827047. The cubic root of 142811228 is about 522.7019470739.

Adding to 142811228 its reverse (822118241), we get a palindrome (964929469).

The spelling of 142811228 in words is "one hundred forty-two million, eight hundred eleven thousand, two hundred twenty-eight".