142312211 has 4 divisors (see below), whose sum is σ = 142385472. Its totient is φ = 142238952.

The previous prime is 142312199. The next prime is 142312213. The reversal of 142312211 is 112213241.

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

It is a cyclic number.

It is not a de Polignac number, because 142312211 - 2¹⁰ = 142311187 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 142312211.

It is not an unprimeable number, because it can be changed into a prime (142312213) 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, 33635 + ... + 37628.

It is an arithmetic number, because the mean of its divisors is an integer number (35596368).

Almost surely, 2^142312211 is an apocalyptic number.

142312211 is a deficient number, since it is larger than the sum of its proper divisors (73261).

142312211 is an equidigital number, since it uses as much as digits as its factorization.

142312211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73260.

The product of its digits is 96, while the sum is 17.

The square root of 142312211 is about 11929.4681775844. The cubic root of 142312211 is about 522.0924208676.

Adding to 142312211 its reverse (112213241), we get a palindrome (254525452).

The spelling of 142312211 in words is "one hundred forty-two million, three hundred twelve thousand, two hundred eleven".