142228522 has 8 divisors (see below), whose sum is σ = 213412356. Its totient is φ = 71091072.

The previous prime is 142228517. The next prime is 142228529. The reversal of 142228522 is 225822241.

It can be written as a sum of positive squares in 2 ways, for example, as 140209281 + 2019241 = 11841^2 + 1421^2 .

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

It is not an unprimeable number, because it can be changed into a prime (142228529) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2503 + ... + 17050.

Almost surely, 2^142228522 is an apocalyptic number.

142228522 is a deficient number, since it is larger than the sum of its proper divisors (71183834).

142228522 is a wasteful number, since it uses less digits than its factorization.

142228522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23192.

The product of its digits is 5120, while the sum is 28.

The square root of 142228522 is about 11925.9600032869. The cubic root of 142228522 is about 521.9900591659.

The spelling of 142228522 in words is "one hundred forty-two million, two hundred twenty-eight thousand, five hundred twenty-two".