142204222 has 8 divisors (see below), whose sum is σ = 213541200. Its totient is φ = 71023824.

The previous prime is 142204207. The next prime is 142204243. The reversal of 142204222 is 222402241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 142204222.

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 3 ways as a sum of consecutive naturals, for example, 36847 + ... + 40522.

It is an arithmetic number, because the mean of its divisors is an integer number (26692650).

Almost surely, 2^142204222 is an apocalyptic number.

142204222 is a deficient number, since it is larger than the sum of its proper divisors (71336978).

142204222 is an equidigital number, since it uses as much as digits as its factorization.

142204222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78290.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 142204222 is about 11924.9411738591. The cubic root of 142204222 is about 521.9603298244.

Adding to 142204222 its reverse (222402241), we get a palindrome (364606463).

The spelling of 142204222 in words is "one hundred forty-two million, two hundred four thousand, two hundred twenty-two".