2143841 has 4 divisors (see below), whose sum is σ = 2450112. Its totient is φ = 1837572.

The previous prime is 2143837. The next prime is 2143847. The reversal of 2143841 is 1483412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2143841 - 2² = 2143837 is a prime.

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2143847) 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, 153125 + ... + 153138.

It is an arithmetic number, because the mean of its divisors is an integer number (612528).

2^2143841 is an apocalyptic number.

It is an amenable number.

2143841 is a deficient number, since it is larger than the sum of its proper divisors (306271).

2143841 is an equidigital number, since it uses as much as digits as its factorization.

2143841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306270.

The product of its digits is 768, while the sum is 23.

The square root of 2143841 is about 1464.1861220487. The cubic root of 2143841 is about 128.9429268993.

The spelling of 2143841 in words is "two million, one hundred forty-three thousand, eight hundred forty-one".