1244143212 has 96 divisors (see below), whose sum is σ = 3240566784. Its totient is φ = 368928000.

The previous prime is 1244143211. The next prime is 1244143217. The reversal of 1244143212 is 2123414421.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1244143211) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1774462 + ... + 1775162.

It is an arithmetic number, because the mean of its divisors is an integer number (33755904).

Almost surely, 2^1244143212 is an apocalyptic number.

1244143212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1244143212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1620283392).

1244143212 is an abundant number, since it is smaller than the sum of its proper divisors (1996423572).

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

1244143212 is a wasteful number, since it uses less digits than its factorization.

1244143212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119 (or 1117 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 1244143212 is about 35272.4143205423. The cubic root of 1244143212 is about 1075.5323015862.

Adding to 1244143212 its reverse (2123414421), we get a palindrome (3367557633).

The spelling of 1244143212 in words is "one billion, two hundred forty-four million, one hundred forty-three thousand, two hundred twelve".