142872859 has 2 divisors, whose sum is σ = 142872860. Its totient is φ = 142872858.

The previous prime is 142872853. The next prime is 142872869. The reversal of 142872859 is 958278241.

It is a weak prime.

It is an emirp because it is prime and its reverse (958278241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142872859 - 2⁵ = 142872827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142872853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71436429 + 71436430.

It is an arithmetic number, because the mean of its divisors is an integer number (71436430).

Almost surely, 2^142872859 is an apocalyptic number.

142872859 is a deficient number, since it is larger than the sum of its proper divisors (1).

142872859 is an equidigital number, since it uses as much as digits as its factorization.

142872859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 322560, while the sum is 46.

The square root of 142872859 is about 11952.9435286878. The cubic root of 142872859 is about 522.7771279289. Note that the first 3 decimals are identical.

The spelling of 142872859 in words is "one hundred forty-two million, eight hundred seventy-two thousand, eight hundred fifty-nine".