1244021304 has 32 divisors (see below), whose sum is σ = 3182382720. Its totient is φ = 405029856.

The previous prime is 1244021299. The next prime is 1244021327. The reversal of 1244021304 is 4031204421.

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 7 ways as a sum of consecutive naturals, for example, 601692 + ... + 603755.

It is an arithmetic number, because the mean of its divisors is an integer number (99449460).

Almost surely, 2^1244021304 is an apocalyptic number.

It is an amenable number.

1244021304 is an abundant number, since it is smaller than the sum of its proper divisors (1938361416).

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

1244021304 is a wasteful number, since it uses less digits than its factorization.

1244021304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205499 (or 1205495 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1244021304 is about 35270.6861855564. The cubic root of 1244021304 is about 1075.4971715804.

Adding to 1244021304 its reverse (4031204421), we get a palindrome (5275225725).

The spelling of 1244021304 in words is "one billion, two hundred forty-four million, twenty-one thousand, three hundred four".