142889228 has 6 divisors (see below), whose sum is σ = 250056156. Its totient is φ = 71444612.

The previous prime is 142889221. The next prime is 142889237. The reversal of 142889228 is 822988241.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (142889221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17861150 + ... + 17861157.

It is an arithmetic number, because the mean of its divisors is an integer number (41676026).

Almost surely, 2^142889228 is an apocalyptic number.

It is an amenable number.

142889228 is a deficient number, since it is larger than the sum of its proper divisors (107166928).

142889228 is a wasteful number, since it uses less digits than its factorization.

142889228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35722311 (or 35722309 counting only the distinct ones).

The product of its digits is 147456, while the sum is 44.

The square root of 142889228 is about 11953.6282358119. The cubic root of 142889228 is about 522.7970920939.

The spelling of 142889228 in words is "one hundred forty-two million, eight hundred eighty-nine thousand, two hundred twenty-eight".