142243223 has 2 divisors, whose sum is σ = 142243224. Its totient is φ = 142243222.

The previous prime is 142243217. The next prime is 142243243. The reversal of 142243223 is 322342241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142243223 - 2¹⁴ = 142226839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142243243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71121611 + 71121612.

It is an arithmetic number, because the mean of its divisors is an integer number (71121612).

Almost surely, 2^142243223 is an apocalyptic number.

142243223 is a deficient number, since it is larger than the sum of its proper divisors (1).

142243223 is an equidigital number, since it uses as much as digits as its factorization.

142243223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 23.

The square root of 142243223 is about 11926.5763318733. The cubic root of 142243223 is about 522.0080431618.

Adding to 142243223 its reverse (322342241), we get a palindrome (464585464).

The spelling of 142243223 in words is "one hundred forty-two million, two hundred forty-three thousand, two hundred twenty-three".