1002215 has 4 divisors (see below), whose sum is σ = 1202664. Its totient is φ = 801768.

The previous prime is 1002191. The next prime is 1002227. The reversal of 1002215 is 5122001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5122001 = 19 ⋅269579.

It is a cyclic number.

It is not a de Polignac number, because 1002215 - 2⁶ = 1002151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1002196 and 1002205.

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 in 3 ways as a sum of consecutive naturals, for example, 100217 + ... + 100226.

It is an arithmetic number, because the mean of its divisors is an integer number (300666).

2^1002215 is an apocalyptic number.

1002215 is a deficient number, since it is larger than the sum of its proper divisors (200449).

1002215 is an equidigital number, since it uses as much as digits as its factorization.

1002215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200448.

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 1002215 is about 1001.1068874001. The cubic root of 1002215 is about 100.0737788867.

Adding to 1002215 its reverse (5122001), we get a palindrome (6124216).

It can be divided in two parts, 100221 and 5, that multiplied together give a palindrome (501105).

The spelling of 1002215 in words is "one million, two thousand, two hundred fifteen".