1292871 has 4 divisors (see below), whose sum is σ = 1723832. Its totient is φ = 861912.

The previous prime is 1292857. The next prime is 1292887. The reversal of 1292871 is 1782921.

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

It is not a de Polignac number, because 1292871 - 2¹¹ = 1290823 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 (1292801) 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, 215476 + ... + 215481.

It is an arithmetic number, because the mean of its divisors is an integer number (430958).

2^1292871 is an apocalyptic number.

1292871 is a deficient number, since it is larger than the sum of its proper divisors (430961).

1292871 is an equidigital number, since it uses as much as digits as its factorization.

1292871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430960.

The product of its digits is 2016, while the sum is 30.

The square root of 1292871 is about 1137.0448539965. The cubic root of 1292871 is about 108.9394214912.

The spelling of 1292871 in words is "one million, two hundred ninety-two thousand, eight hundred seventy-one".