1003842 has 48 divisors (see below), whose sum is σ = 2575872. Its totient is φ = 276480.

The previous prime is 1003841. The next prime is 1003879. The reversal of 1003842 is 2483001.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003841) 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, 3778 + ... + 4034.

It is an arithmetic number, because the mean of its divisors is an integer number (53664).

2^1003842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1003842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1287936).

1003842 is an abundant number, since it is smaller than the sum of its proper divisors (1572030).

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

1003842 is a wasteful number, since it uses less digits than its factorization.

1003842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303 (or 300 counting only the distinct ones).

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

The square root of 1003842 is about 1001.9191584155. The cubic root of 1003842 is about 100.1279030051.

Adding to 1003842 its reverse (2483001), we get a palindrome (3486843).

The spelling of 1003842 in words is "one million, three thousand, eight hundred forty-two".