1004138 has 8 divisors (see below), whose sum is σ = 1534788. Its totient is φ = 492544.

The previous prime is 1004137. The next prime is 1004141. The reversal of 1004138 is 8314001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 833569 + 170569 = 913^2 + 413^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1004137) 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 3 ways as a sum of consecutive naturals, for example, 4631 + ... + 4842.

2^1004138 is an apocalyptic number.

1004138 is a deficient number, since it is larger than the sum of its proper divisors (530650).

1004138 is an equidigital number, since it uses as much as digits as its factorization.

1004138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9528.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1004138 is about 1002.0668640365. The cubic root of 1004138 is about 100.1377435135.

Adding to 1004138 its reverse (8314001), we get a palindrome (9318139).

The spelling of 1004138 in words is "one million, four thousand, one hundred thirty-eight".