1000115 has 4 divisors (see below), whose sum is σ = 1200144. Its totient is φ = 800088.

The previous prime is 1000099. The next prime is 1000117. The reversal of 1000115 is 5110001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5110001 = 13 ⋅393077.

It is a cyclic number.

It is not a de Polignac number, because 1000115 - 2⁴ = 1000099 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000117) 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, 100007 + ... + 100016.

It is an arithmetic number, because the mean of its divisors is an integer number (300036).

2^1000115 is an apocalyptic number.

1000115 is a deficient number, since it is larger than the sum of its proper divisors (200029).

1000115 is an equidigital number, since it uses as much as digits as its factorization.

1000115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200028.

The product of its (nonzero) digits is 5, while the sum is 8.

The square root of 1000115 is about 1000.0574983470. The cubic root of 1000115 is about 100.0038331864.

Adding to 1000115 its reverse (5110001), we get a palindrome (6110116).

The spelling of 1000115 in words is "one million, one hundred fifteen", and thus it is an aban number.