1047871 has 4 divisors (see below), whose sum is σ = 1143144. Its totient is φ = 952600.

The previous prime is 1047859. The next prime is 1047881. The reversal of 1047871 is 1787401.

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

It is a de Polignac number, because none of the positive numbers 2^k-1047871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47620 + ... + 47641.

It is an arithmetic number, because the mean of its divisors is an integer number (285786).

2^1047871 is an apocalyptic number.

1047871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1047871 is a deficient number, since it is larger than the sum of its proper divisors (95273).

1047871 is an equidigital number, since it uses as much as digits as its factorization.

1047871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95272.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 1047871 is about 1023.6557038380. The cubic root of 1047871 is about 101.5708937126.

The spelling of 1047871 in words is "one million, forty-seven thousand, eight hundred seventy-one".