142175239 has 2 divisors, whose sum is σ = 142175240. Its totient is φ = 142175238.

The previous prime is 142175237. The next prime is 142175261. The reversal of 142175239 is 932571241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142175239 - 2¹ = 142175237 is a prime.

Together with 142175237, 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 (142175237) 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, 71087619 + 71087620.

It is an arithmetic number, because the mean of its divisors is an integer number (71087620).

Almost surely, 2^142175239 is an apocalyptic number.

142175239 is a deficient number, since it is larger than the sum of its proper divisors (1).

142175239 is an equidigital number, since it uses as much as digits as its factorization.

142175239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 142175239 is about 11923.7258858127. The cubic root of 142175239 is about 521.9248667327.

The spelling of 142175239 in words is "one hundred forty-two million, one hundred seventy-five thousand, two hundred thirty-nine".