1004158 has 4 divisors (see below), whose sum is σ = 1506240. Its totient is φ = 502078.

The previous prime is 1004141. The next prime is 1004161. The reversal of 1004158 is 8514001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8514001 = 2063 ⋅4127.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251038 + ... + 251041.

It is an arithmetic number, because the mean of its divisors is an integer number (376560).

2^1004158 is an apocalyptic number.

1004158 is a deficient number, since it is larger than the sum of its proper divisors (502082).

1004158 is an equidigital number, since it uses as much as digits as its factorization.

1004158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502081.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1004158 is about 1002.0768433608. The cubic root of 1004158 is about 100.1384083429.

Adding to 1004158 its reverse (8514001), we get a palindrome (9518159).

The spelling of 1004158 in words is "one million, four thousand, one hundred fifty-eight".