1104021 has 12 divisors (see below), whose sum is σ = 1604460. Its totient is φ = 731520.

The previous prime is 1104017. The next prime is 1104041. The reversal of 1104021 is 1204011.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 864900 + 239121 = 930^2 + 489^2 .

It is not a de Polignac number, because 1104021 - 2² = 1104017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1103994 and 1104012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1104041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1915 + ... + 2423.

It is an arithmetic number, because the mean of its divisors is an integer number (133705).

2^1104021 is an apocalyptic number.

It is an amenable number.

1104021 is a deficient number, since it is larger than the sum of its proper divisors (500439).

1104021 is a wasteful number, since it uses less digits than its factorization.

1104021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1104021 is about 1050.7240360818. The cubic root of 1104021 is about 103.3536403610.

Adding to 1104021 its reverse (1204011), we get a palindrome (2308032).

The spelling of 1104021 in words is "one million, one hundred four thousand, twenty-one".