1243244141200 has 60 divisors (see below), whose sum is σ = 2987986393908. Its totient is φ = 497115788800.

The previous prime is 1243244141123. The next prime is 1243244141203. The reversal of 1243244141200 is 21414423421.

It can be written as a sum of positive squares in 6 ways, for example, as 8665375744 + 1234578765456 = 93088^2 + 1111116^2 .

It is not an unprimeable number, because it can be changed into a prime (1243244141203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 529434 + ... + 1663366.

Almost surely, 2^{1243244141200} is an apocalyptic number.

1243244141200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243244141200 is an abundant number, since it is smaller than the sum of its proper divisors (1744742252708).

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

1243244141200 is a wasteful number, since it uses less digits than its factorization.

1243244141200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136692 (or 1136681 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 1243244141200 its reverse (21414423421), we get a palindrome (1264658564621).

The spelling of 1243244141200 in words is "one trillion, two hundred forty-three billion, two hundred forty-four million, one hundred forty-one thousand, two hundred".