1843121 has 4 divisors (see below), whose sum is σ = 2106432. Its totient is φ = 1579812.

The previous prime is 1843117. The next prime is 1843129. The reversal of 1843121 is 1213481.

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 1843121 - 2² = 1843117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1843093 and 1843102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1843129) 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, 131645 + ... + 131658.

It is an arithmetic number, because the mean of its divisors is an integer number (526608).

2^1843121 is an apocalyptic number.

It is an amenable number.

1843121 is a deficient number, since it is larger than the sum of its proper divisors (263311).

1843121 is an equidigital number, since it uses as much as digits as its factorization.

1843121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263310.

The product of its digits is 192, while the sum is 20.

The square root of 1843121 is about 1357.6159250686. The cubic root of 1843121 is about 122.6077574668.

The spelling of 1843121 in words is "one million, eight hundred forty-three thousand, one hundred twenty-one".