1842921 has 24 divisors (see below), whose sum is σ = 2882880. Its totient is φ = 1130976.

The previous prime is 1842913. The next prime is 1842931. The reversal of 1842921 is 1292481.

It is not a de Polignac number, because 1842921 - 2³ = 1842913 is a prime.

1842921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1842901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5850 + ... + 6156.

It is an arithmetic number, because the mean of its divisors is an integer number (120120).

2^1842921 is an apocalyptic number.

It is an amenable number.

1842921 is a deficient number, since it is larger than the sum of its proper divisors (1039959).

1842921 is a wasteful number, since it uses less digits than its factorization.

1842921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 362 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1842921 is about 1357.5422645354. The cubic root of 1842921 is about 122.6033225186.

The spelling of 1842921 in words is "one million, eight hundred forty-two thousand, nine hundred twenty-one".