1244225240 has 32 divisors (see below), whose sum is σ = 2964185280. Its totient is φ = 468413952.

The previous prime is 1244225221. The next prime is 1244225243. The reversal of 1244225240 is 425224421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244225243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 914192 + ... + 915551.

It is an arithmetic number, because the mean of its divisors is an integer number (92630790).

Almost surely, 2^1244225240 is an apocalyptic number.

1244225240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244225240 is an abundant number, since it is smaller than the sum of its proper divisors (1719960040).

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

1244225240 is a wasteful number, since it uses less digits than its factorization.

1244225240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829771 (or 1829767 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 1244225240 is about 35273.5770797349. The cubic root of 1244225240 is about 1075.5559381536. Note that the first 3 decimals are identical.

Adding to 1244225240 its reverse (425224421), we get a palindrome (1669449661).

The spelling of 1244225240 in words is "one billion, two hundred forty-four million, two hundred twenty-five thousand, two hundred forty".