1204421312 has 56 divisors (see below), whose sum is σ = 2500920576. Its totient is φ = 574416128.

The previous prime is 1204421303. The next prime is 1204421327. The reversal of 1204421312 is 2131244021.

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 7 ways as a sum of consecutive naturals, for example, 651173 + ... + 653019.

It is an arithmetic number, because the mean of its divisors is an integer number (44659296).

Almost surely, 2^1204421312 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 1204421312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1250460288).

1204421312 is an abundant number, since it is smaller than the sum of its proper divisors (1296499264).

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

1204421312 is a wasteful number, since it uses less digits than its factorization.

1204421312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2325 (or 2315 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1204421312 is about 34704.7736197774. The cubic root of 1204421312 is about 1063.9620654687.

Adding to 1204421312 its reverse (2131244021), we get a palindrome (3335665333).

The spelling of 1204421312 in words is "one billion, two hundred four million, four hundred twenty-one thousand, three hundred twelve".