1087143 has 4 divisors (see below), whose sum is σ = 1449528. Its totient is φ = 724760.

The previous prime is 1087129. The next prime is 1087147. The reversal of 1087143 is 3417801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1087143 - 2¹⁰ = 1086119 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181188 + ... + 181193.

It is an arithmetic number, because the mean of its divisors is an integer number (362382).

2^1087143 is an apocalyptic number.

1087143 is a deficient number, since it is larger than the sum of its proper divisors (362385).

1087143 is an equidigital number, since it uses as much as digits as its factorization.

1087143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362384.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 1087143 is about 1042.6614982822. The cubic root of 1087143 is about 102.8242517740.

It can be divided in two parts, 10 and 87143, that added together give a triangular number (87153 = T₄₁₇).

The spelling of 1087143 in words is "one million, eighty-seven thousand, one hundred forty-three".