1002871 has 2 divisors, whose sum is σ = 1002872. Its totient is φ = 1002870.

The previous prime is 1002863. The next prime is 1002887. The reversal of 1002871 is 1782001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1002871 - 2³ = 1002863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1002821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501435 + 501436.

It is an arithmetic number, because the mean of its divisors is an integer number (501436).

2^1002871 is an apocalyptic number.

1002871 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002871 is an equidigital number, since it uses as much as digits as its factorization.

1002871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 1002871 is about 1001.4344711463. The cubic root of 1002871 is about 100.0956085609.

Adding to 1002871 its reverse (1782001), we get a palindrome (2784872).

The spelling of 1002871 in words is "one million, two thousand, eight hundred seventy-one".