1242004224 has 144 divisors (see below), whose sum is σ = 3523201920. Its totient is φ = 387072000.

The previous prime is 1242004223. The next prime is 1242004237. The reversal of 1242004224 is 4224002421.

It is a self number, because there is not a number n which added to its sum of digits gives 1242004224.

It is not an unprimeable number, because it can be changed into a prime (1242004223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3276867 + ... + 3277245.

It is an arithmetic number, because the mean of its divisors is an integer number (24466680).

Almost surely, 2^1242004224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242004224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1761600960).

1242004224 is an abundant number, since it is smaller than the sum of its proper divisors (2281197696).

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

1242004224 is a wasteful number, since it uses less digits than its factorization.

1242004224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 1242004224 is about 35242.0803018210. The cubic root of 1242004224 is about 1074.9155798859.

Adding to 1242004224 its reverse (4224002421), we get a palindrome (5466006645).

The spelling of 1242004224 in words is "one billion, two hundred forty-two million, four thousand, two hundred twenty-four".