142235143 has 2 divisors, whose sum is σ = 142235144. Its totient is φ = 142235142.

The previous prime is 142235089. The next prime is 142235179. The reversal of 142235143 is 341532241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142235143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142232143) 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 as a sum of consecutive naturals, namely, 71117571 + 71117572.

It is an arithmetic number, because the mean of its divisors is an integer number (71117572).

Almost surely, 2^142235143 is an apocalyptic number.

142235143 is a deficient number, since it is larger than the sum of its proper divisors (1).

142235143 is an equidigital number, since it uses as much as digits as its factorization.

142235143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880, while the sum is 25.

The square root of 142235143 is about 11926.2375877726. The cubic root of 142235143 is about 521.9981589068.

Adding to 142235143 its reverse (341532241), we get a palindrome (483767384).

The spelling of 142235143 in words is "one hundred forty-two million, two hundred thirty-five thousand, one hundred forty-three".