142300221 has 16 divisors (see below), whose sum is σ = 217072128. Its totient is φ = 81226800.

The previous prime is 142300219. The next prime is 142300243. The reversal of 142300221 is 122003241.

It is not a de Polignac number, because 142300221 - 2¹ = 142300219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142300221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142300211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19806 + ... + 26016.

It is an arithmetic number, because the mean of its divisors is an integer number (13567008).

Almost surely, 2^142300221 is an apocalyptic number.

It is an amenable number.

142300221 is a deficient number, since it is larger than the sum of its proper divisors (74771907).

142300221 is a wasteful number, since it uses less digits than its factorization.

142300221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7312.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 142300221 is about 11928.9656299279. The cubic root of 142300221 is about 522.0777581203.

Adding to 142300221 its reverse (122003241), we get a palindrome (264303462).

The spelling of 142300221 in words is "one hundred forty-two million, three hundred thousand, two hundred twenty-one".