1427871 has 4 divisors (see below), whose sum is σ = 1903832. Its totient is φ = 951912.

The previous prime is 1427851. The next prime is 1427879. The reversal of 1427871 is 1787241.

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

It is not a de Polignac number, because 1427871 - 2⁹ = 1427359 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427879) 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 in 3 ways as a sum of consecutive naturals, for example, 237976 + ... + 237981.

It is an arithmetic number, because the mean of its divisors is an integer number (475958).

2^1427871 is an apocalyptic number.

1427871 is a deficient number, since it is larger than the sum of its proper divisors (475961).

1427871 is an equidigital number, since it uses as much as digits as its factorization.

1427871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475960.

The product of its digits is 3136, while the sum is 30.

The square root of 1427871 is about 1194.9355631163. The cubic root of 1427871 is about 112.6063783908.

The spelling of 1427871 in words is "one million, four hundred twenty-seven thousand, eight hundred seventy-one".