1020215 has 16 divisors (see below), whose sum is σ = 1417728. Its totient is φ = 690336.

The previous prime is 1020163. The next prime is 1020223. The reversal of 1020215 is 5120201.

It is a cyclic number.

It is not a de Polignac number, because 1020215 - 2¹⁸ = 758071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020196 and 1020205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3464 + ... + 3746.

It is an arithmetic number, because the mean of its divisors is an integer number (88608).

2^1020215 is an apocalyptic number.

1020215 is a deficient number, since it is larger than the sum of its proper divisors (397513).

1020215 is a wasteful number, since it uses less digits than its factorization.

1020215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398.

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

The square root of 1020215 is about 1010.0569290887. The cubic root of 1020215 is about 100.6693431350.

Adding to 1020215 its reverse (5120201), we get a palindrome (6140416).

The spelling of 1020215 in words is "one million, twenty thousand, two hundred fifteen".