142204224 has 56 divisors (see below), whose sum is σ = 377391168. Its totient is φ = 47257600.

The previous prime is 142204207. The next prime is 142204243. The reversal of 142204224 is 422402241.

It is a self number, because there is not a number n which added to its sum of digits gives 142204224.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76069 + ... + 77915.

It is an arithmetic number, because the mean of its divisors is an integer number (6739128).

Almost surely, 2^142204224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142204224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188695584).

142204224 is an abundant number, since it is smaller than the sum of its proper divisors (235186944).

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

142204224 is a wasteful number, since it uses less digits than its factorization.

142204224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2263 (or 2253 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 142204224 is about 11924.9412577170. The cubic root of 142204224 is about 521.9603322714.

Adding to 142204224 its reverse (422402241), we get a palindrome (564606465).

The spelling of 142204224 in words is "one hundred forty-two million, two hundred four thousand, two hundred twenty-four".