142862987 has 2 divisors, whose sum is σ = 142862988. Its totient is φ = 142862986.

The previous prime is 142862981. The next prime is 142863001. The reversal of 142862987 is 789268241.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142862987 - 2¹⁰ = 142861963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (142862981) 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, 71431493 + 71431494.

It is an arithmetic number, because the mean of its divisors is an integer number (71431494).

Almost surely, 2^142862987 is an apocalyptic number.

142862987 is a deficient number, since it is larger than the sum of its proper divisors (1).

142862987 is an equidigital number, since it uses as much as digits as its factorization.

142862987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 47.

The square root of 142862987 is about 11952.5305688795. The cubic root of 142862987 is about 522.7650869793.

The spelling of 142862987 in words is "one hundred forty-two million, eight hundred sixty-two thousand, nine hundred eighty-seven".