987143 has 2 divisors, whose sum is σ = 987144. Its totient is φ = 987142.

The previous prime is 987127. The next prime is 987191. The reversal of 987143 is 341789.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 987143 - 2⁴ = 987127 is a prime.

It is equal to p₇₇₅₈₅ and since 987143 and 77585 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (987193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 493571 + 493572.

It is an arithmetic number, because the mean of its divisors is an integer number (493572).

2⁹⁸⁷¹⁴³ is an apocalyptic number.

987143 is a deficient number, since it is larger than the sum of its proper divisors (1).

987143 is an equidigital number, since it uses as much as digits as its factorization.

987143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 987143 is about 993.5507032859. The cubic root of 987143 is about 99.5695834068.

It can be divided in two parts, 987 and 143, that multiplied together give a palindrome (141141).

The spelling of 987143 in words is "nine hundred eighty-seven thousand, one hundred forty-three".