1021206 has 16 divisors (see below), whose sum is σ = 2113200. Its totient is φ = 328608.

The previous prime is 1021199. The next prime is 1021217. The reversal of 1021206 is 6021201.

It is a junction number, because it is equal to n+sod(n) for n = 1021191 and 1021200.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2761 + ... + 3108.

It is an arithmetic number, because the mean of its divisors is an integer number (132075).

2^1021206 is an apocalyptic number.

1021206 is an abundant number, since it is smaller than the sum of its proper divisors (1091994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1021206 is a wasteful number, since it uses less digits than its factorization.

1021206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5903.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1021206 is about 1010.5473764253. The cubic root of 1021206 is about 100.7019281079.

Adding to 1021206 its reverse (6021201), we get a palindrome (7042407).

The spelling of 1021206 in words is "one million, twenty-one thousand, two hundred six".