1213206 has 8 divisors (see below), whose sum is σ = 2426424. Its totient is φ = 404400.

The previous prime is 1213189. The next prime is 1213213. The reversal of 1213206 is 6023121.

It is a sphenic number, since it is the product of 3 distinct primes.

1213206 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101095 + ... + 101106.

It is an arithmetic number, because the mean of its divisors is an integer number (303303).

2^1213206 is an apocalyptic number.

1213206 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1213206 is a wasteful number, since it uses less digits than its factorization.

1213206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202206.

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

The square root of 1213206 is about 1101.4563087113. The cubic root of 1213206 is about 106.6542541980.

Adding to 1213206 its reverse (6023121), we get a palindrome (7236327).

The spelling of 1213206 in words is "one million, two hundred thirteen thousand, two hundred six".