142860239 has 2 divisors, whose sum is σ = 142860240. Its totient is φ = 142860238.

The previous prime is 142860229. The next prime is 142860241. The reversal of 142860239 is 932068241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142860239 - 2¹² = 142856143 is a prime.

Together with 142860241, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 142860199 and 142860208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142860229) 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, 71430119 + 71430120.

It is an arithmetic number, because the mean of its divisors is an integer number (71430120).

Almost surely, 2^142860239 is an apocalyptic number.

142860239 is a deficient number, since it is larger than the sum of its proper divisors (1).

142860239 is an equidigital number, since it uses as much as digits as its factorization.

142860239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 142860239 is about 11952.4156135904. The cubic root of 142860239 is about 522.7617351252.

The spelling of 142860239 in words is "one hundred forty-two million, eight hundred sixty thousand, two hundred thirty-nine".