142234111 has 2 divisors, whose sum is σ = 142234112. Its totient is φ = 142234110.

The previous prime is 142234109. The next prime is 142234163. The reversal of 142234111 is 111432241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142234111 - 2¹ = 142234109 is a prime.

Together with 142234109, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142234181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71117055 + 71117056.

It is an arithmetic number, because the mean of its divisors is an integer number (71117056).

Almost surely, 2^142234111 is an apocalyptic number.

142234111 is a deficient number, since it is larger than the sum of its proper divisors (1).

142234111 is an equidigital number, since it uses as much as digits as its factorization.

142234111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 19.

The square root of 142234111 is about 11926.1943217440. The cubic root of 142234111 is about 521.9968964354.

Adding to 142234111 its reverse (111432241), we get a palindrome (253666352).

The spelling of 142234111 in words is "one hundred forty-two million, two hundred thirty-four thousand, one hundred eleven".