1213204 has 12 divisors (see below), whose sum is σ = 2215584. Its totient is φ = 580184.

The previous prime is 1213189. The next prime is 1213213. The reversal of 1213204 is 4023121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6502 + ... + 6685.

It is an arithmetic number, because the mean of its divisors is an integer number (184632).

2^1213204 is an apocalyptic number.

It is an amenable number.

1213204 is a deficient number, since it is larger than the sum of its proper divisors (1002380).

1213204 is a wasteful number, since it uses less digits than its factorization.

1213204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13214 (or 13212 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1213204 is about 1101.4554008220. The cubic root of 1213204 is about 106.6541955906.

Adding to 1213204 its reverse (4023121), we get a palindrome (5236325).

The spelling of 1213204 in words is "one million, two hundred thirteen thousand, two hundred four".