1209224 has 8 divisors (see below), whose sum is σ = 2267310. Its totient is φ = 604608.

The previous prime is 1209223. The next prime is 1209233. The reversal of 1209224 is 4229021.

It can be written as a sum of positive squares in only one way, i.e., 940900 + 268324 = 970^2 + 518^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1209196 and 1209205.

It is not an unprimeable number, because it can be changed into a prime (1209223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75569 + ... + 75584.

2^1209224 is an apocalyptic number.

It is an amenable number.

1209224 is a deficient number, since it is larger than the sum of its proper divisors (1058086).

1209224 is a wasteful number, since it uses less digits than its factorization.

1209224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151159 (or 151155 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1209224 is about 1099.6472161562. The cubic root of 1209224 is about 106.5374389888.

The spelling of 1209224 in words is "one million, two hundred nine thousand, two hundred twenty-four".