1020213 has 6 divisors (see below), whose sum is σ = 1473654. Its totient is φ = 680136.

The previous prime is 1020163. The next prime is 1020223. The reversal of 1020213 is 3120201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 580644 + 439569 = 762^2 + 663^2 .

It is not a de Polignac number, because 1020213 - 2⁹ = 1019701 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 113357 = 1020213 / (1 + 0 + 2 + 0 + 2 + 1 + 3).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1020195 and 1020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020223) 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 5 ways as a sum of consecutive naturals, for example, 56670 + ... + 56687.

It is an arithmetic number, because the mean of its divisors is an integer number (245609).

2^1020213 is an apocalyptic number.

It is an amenable number.

1020213 is a deficient number, since it is larger than the sum of its proper divisors (453441).

1020213 is a wasteful number, since it uses less digits than its factorization.

1020213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113363 (or 113360 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1020213 is about 1010.0559390450. The cubic root of 1020213 is about 100.6692773519.

Subtracting from 1020213 its product of nonzero digits (12), we obtain a palindrome (1020201).

Adding to 1020213 its reverse (3120201), we get a palindrome (4140414).

The spelling of 1020213 in words is "one million, twenty thousand, two hundred thirteen".