1004081 has 4 divisors (see below), whose sum is σ = 1081332. Its totient is φ = 926832.

The previous prime is 1004077. The next prime is 1004089. The reversal of 1004081 is 1804001.

It is a happy number.

1004081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43681 + 960400 = 209^2 + 980^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004081 - 2² = 1004077 is a prime.

It is a super-2 number, since 2×1004081² = 2016357309122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1004089) 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, 38606 + ... + 38631.

It is an arithmetic number, because the mean of its divisors is an integer number (270333).

2^1004081 is an apocalyptic number.

It is an amenable number.

1004081 is a deficient number, since it is larger than the sum of its proper divisors (77251).

1004081 is an equidigital number, since it uses as much as digits as its factorization.

1004081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77250.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1004081 is about 1002.0384224170. The cubic root of 1004081 is about 100.1358487011.

Adding to 1004081 its reverse (1804001), we get a palindrome (2808082).

The spelling of 1004081 in words is "one million, four thousand, eighty-one".