1224252 has 36 divisors (see below), whose sum is σ = 3197376. Its totient is φ = 394560.

The previous prime is 1224239. The next prime is 1224257. The reversal of 1224252 is 2524221.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224257) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 568 + ... + 1664.

It is an arithmetic number, because the mean of its divisors is an integer number (88816).

2^1224252 is an apocalyptic number.

1224252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1224252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1598688).

1224252 is an abundant number, since it is smaller than the sum of its proper divisors (1973124).

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

1224252 is a wasteful number, since it uses less digits than its factorization.

1224252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138 (or 1133 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 1224252 is about 1106.4592175042. The cubic root of 1224252 is about 106.9769653737.

Adding to 1224252 its reverse (2524221), we get a palindrome (3748473).

The spelling of 1224252 in words is "one million, two hundred twenty-four thousand, two hundred fifty-two".