1004121 has 24 divisors (see below), whose sum is σ = 1547520. Its totient is φ = 626400.

The previous prime is 1004119. The next prime is 1004137. The reversal of 1004121 is 1214001.

It is a happy number.

It is not a de Polignac number, because 1004121 - 2¹ = 1004119 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1004141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16431 + ... + 16491.

It is an arithmetic number, because the mean of its divisors is an integer number (64480).

2^1004121 is an apocalyptic number.

It is an amenable number.

1004121 is a deficient number, since it is larger than the sum of its proper divisors (543399).

1004121 is a wasteful number, since it uses less digits than its factorization.

1004121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 154 counting only the distinct ones).

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

The square root of 1004121 is about 1002.0583815327. The cubic root of 1004121 is about 100.1371784015.

Adding to 1004121 its reverse (1214001), we get a palindrome (2218122).

The spelling of 1004121 in words is "one million, four thousand, one hundred twenty-one".