142281228 has 24 divisors (see below), whose sum is σ = 351518832. Its totient is φ = 44637184.

The previous prime is 142281199. The next prime is 142281277. The reversal of 142281228 is 822182241.

It is a junction number, because it is equal to n+sod(n) for n = 142281195 and 142281204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348525 + ... + 348932.

It is an arithmetic number, because the mean of its divisors is an integer number (14646618).

Almost surely, 2^142281228 is an apocalyptic number.

It is an amenable number.

142281228 is an abundant number, since it is smaller than the sum of its proper divisors (209237604).

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

142281228 is a wasteful number, since it uses less digits than its factorization.

142281228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697481 (or 697479 counting only the distinct ones).

The product of its digits is 4096, while the sum is 30.

The square root of 142281228 is about 11928.1695158981. The cubic root of 142281228 is about 522.0545296156.

The spelling of 142281228 in words is "one hundred forty-two million, two hundred eighty-one thousand, two hundred twenty-eight".