142330211 has 4 divisors (see below), whose sum is σ = 142385424. Its totient is φ = 142275000.

The previous prime is 142330193. The next prime is 142330213. The reversal of 142330211 is 112033241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142330211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142330211.

It is not an unprimeable number, because it can be changed into a prime (142330213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23540 + ... + 28961.

It is an arithmetic number, because the mean of its divisors is an integer number (35596356).

Almost surely, 2^142330211 is an apocalyptic number.

142330211 is a deficient number, since it is larger than the sum of its proper divisors (55213).

142330211 is an equidigital number, since it uses as much as digits as its factorization.

142330211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55212.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 142330211 is about 11930.2225880325. Note that the first 3 decimals coincide. The cubic root of 142330211 is about 522.1144317860.

Adding to 142330211 its reverse (112033241), we get a palindrome (254363452).

The spelling of 142330211 in words is "one hundred forty-two million, three hundred thirty thousand, two hundred eleven".