1229812 has 12 divisors (see below), whose sum is σ = 2193156. Its totient is φ = 603200.

The previous prime is 1229807. The next prime is 1229827. The reversal of 1229812 is 2189221.

It can be written as a sum of positive squares in 2 ways, for example, as 1089936 + 139876 = 1044^2 + 374^2 .

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 3 ways as a sum of consecutive naturals, for example, 2689 + ... + 3112.

It is an arithmetic number, because the mean of its divisors is an integer number (182763).

2^1229812 is an apocalyptic number.

It is an amenable number.

1229812 is a deficient number, since it is larger than the sum of its proper divisors (963344).

1229812 is a wasteful number, since it uses less digits than its factorization.

1229812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5858 (or 5856 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

The square root of 1229812 is about 1108.9688904564. The cubic root of 1229812 is about 107.1386678574.

The spelling of 1229812 in words is "one million, two hundred twenty-nine thousand, eight hundred twelve".