1244409252 has 12 divisors (see below), whose sum is σ = 2903621616. Its totient is φ = 414803080.

The previous prime is 1244409203. The next prime is 1244409277. The reversal of 1244409252 is 2529044421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51850374 + ... + 51850397.

It is an arithmetic number, because the mean of its divisors is an integer number (241968468).

Almost surely, 2^1244409252 is an apocalyptic number.

1244409252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1244409252 is an abundant number, since it is smaller than the sum of its proper divisors (1659212364).

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

1244409252 is a wasteful number, since it uses less digits than its factorization.

1244409252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103700778 (or 103700776 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 1244409252 is about 35276.1853379869. The cubic root of 1244409252 is about 1075.6089578795.

The spelling of 1244409252 in words is "one billion, two hundred forty-four million, four hundred nine thousand, two hundred fifty-two".