142012223 has 2 divisors, whose sum is σ = 142012224. Its totient is φ = 142012222.

The previous prime is 142012207. The next prime is 142012243. The reversal of 142012223 is 322210241.

It is a weak prime.

It is an emirp because it is prime and its reverse (322210241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142012223 - 2⁴ = 142012207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142012243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71006111 + 71006112.

It is an arithmetic number, because the mean of its divisors is an integer number (71006112).

Almost surely, 2^142012223 is an apocalyptic number.

142012223 is a deficient number, since it is larger than the sum of its proper divisors (1).

142012223 is an equidigital number, since it uses as much as digits as its factorization.

142012223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 142012223 is about 11916.8881424640. Note that the first 3 decimals coincide. The cubic root of 142012223 is about 521.7253133661.

Adding to 142012223 its reverse (322210241), we get a palindrome (464222464).

The spelling of 142012223 in words is "one hundred forty-two million, twelve thousand, two hundred twenty-three".