142857287 has 2 divisors, whose sum is σ = 142857288. Its totient is φ = 142857286.

The previous prime is 142857271. The next prime is 142857289. The reversal of 142857287 is 782758241.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 142857287 - 2⁴ = 142857271 is a prime.

Together with 142857289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142857289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71428643 + 71428644.

It is an arithmetic number, because the mean of its divisors is an integer number (71428644).

Almost surely, 2^142857287 is an apocalyptic number.

142857287 is a deficient number, since it is larger than the sum of its proper divisors (1).

142857287 is an equidigital number, since it uses as much as digits as its factorization.

142857287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 250880, while the sum is 44.

The square root of 142857287 is about 11952.2921232707. The cubic root of 142857287 is about 522.7581343956.

The spelling of 142857287 in words is "one hundred forty-two million, eight hundred fifty-seven thousand, two hundred eighty-seven".