2142871 has 8 divisors (see below), whose sum is σ = 2211840. Its totient is φ = 2074968.

The previous prime is 2142857. The next prime is 2142883. The reversal of 2142871 is 1782412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2142871 - 2⁷ = 2142743 is a prime.

It is a super-2 number, since 2×2142871² = 9183792245282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5790 + ... + 6148.

It is an arithmetic number, because the mean of its divisors is an integer number (276480).

2^2142871 is an apocalyptic number.

2142871 is a deficient number, since it is larger than the sum of its proper divisors (68969).

2142871 is a wasteful number, since it uses less digits than its factorization.

2142871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533.

The product of its digits is 896, while the sum is 25.

The square root of 2142871 is about 1463.8548425305. The cubic root of 2142871 is about 128.9234768394.

The spelling of 2142871 in words is "two million, one hundred forty-two thousand, eight hundred seventy-one".