1811042 has 8 divisors (see below), whose sum is σ = 2859600. Its totient is φ = 857844.

The previous prime is 1811041. The next prime is 1811053. The reversal of 1811042 is 2401181.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1811042.

It is not an unprimeable number, because it can be changed into a prime (1811041) 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, 23792 + ... + 23867.

It is an arithmetic number, because the mean of its divisors is an integer number (357450).

2^1811042 is an apocalyptic number.

1811042 is a deficient number, since it is larger than the sum of its proper divisors (1048558).

1811042 is a wasteful number, since it uses less digits than its factorization.

1811042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47680.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1811042 is about 1345.7496052387. The cubic root of 1811042 is about 121.8922725465.

The spelling of 1811042 in words is "one million, eight hundred eleven thousand, forty-two".