1321206 has 16 divisors (see below), whose sum is σ = 2798064. Its totient is φ = 414464.

The previous prime is 1321193. The next prime is 1321213. The reversal of 1321206 is 6021231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6375 + ... + 6578.

It is an arithmetic number, because the mean of its divisors is an integer number (174879).

2^1321206 is an apocalyptic number.

1321206 is an abundant number, since it is smaller than the sum of its proper divisors (1476858).

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

1321206 is a wasteful number, since it uses less digits than its factorization.

1321206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12975.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1321206 is about 1149.4372536159. The cubic root of 1321206 is about 109.7295283378.

Adding to 1321206 its reverse (6021231), we get a palindrome (7342437).

The spelling of 1321206 in words is "one million, three hundred twenty-one thousand, two hundred six".