1830042 has 24 divisors (see below), whose sum is σ = 4174560. Its totient is φ = 577800.

The previous prime is 1830029. The next prime is 1830047. The reversal of 1830042 is 2400381.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1829997 and 1830024.

It is not an unprimeable number, because it can be changed into a prime (1830047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2334 + ... + 3017.

It is an arithmetic number, because the mean of its divisors is an integer number (173940).

2^1830042 is an apocalyptic number.

1830042 is an abundant number, since it is smaller than the sum of its proper divisors (2344518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1830042 is a wasteful number, since it uses less digits than its factorization.

1830042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5378 (or 5375 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1830042 is about 1352.7904494045. The cubic root of 1830042 is about 122.3170558139.

The spelling of 1830042 in words is "one million, eight hundred thirty thousand, forty-two".