1243011200 has 96 divisors (see below), whose sum is σ = 3114443520. Its totient is φ = 490112000.

The previous prime is 1243011169. The next prime is 1243011239. The reversal of 1243011200 is 21103421.

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 11 ways as a sum of consecutive naturals, for example, 224465 + ... + 229935.

It is an arithmetic number, because the mean of its divisors is an integer number (32442120).

Almost surely, 2^1243011200 is an apocalyptic number.

1243011200 is a gapful number since it is divisible by the number (10) 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 1243011200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1557221760).

1243011200 is an abundant number, since it is smaller than the sum of its proper divisors (1871432320).

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

1243011200 is an equidigital number, since it uses as much as digits as its factorization.

1243011200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5566 (or 5549 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1243011200 is about 35256.3639645384. The cubic root of 1243011200 is about 1075.2060034269.

Adding to 1243011200 its reverse (21103421), we get a palindrome (1264114621).

The spelling of 1243011200 in words is "one billion, two hundred forty-three million, eleven thousand, two hundred".