1243004211240 has 512 divisors, whose sum is σ = 4336986931200. Its totient is φ = 282175488000.

The previous prime is 1243004211221. The next prime is 1243004211329. The reversal of 1243004211240 is 421124003421.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1243004211240.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 191788800 + ... + 191795280.

It is an arithmetic number, because the mean of its divisors is an integer number (8470677600).

Almost surely, 2^{1243004211240} is an apocalyptic number.

1243004211240 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 1243004211240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2168493465600).

1243004211240 is an abundant number, since it is smaller than the sum of its proper divisors (3093982719960).

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

1243004211240 is a wasteful number, since it uses less digits than its factorization.

1243004211240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6689 (or 6685 counting only the distinct ones).

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

Adding to 1243004211240 its reverse (421124003421), we get a palindrome (1664128214661).

The spelling of 1243004211240 in words is "one trillion, two hundred forty-three billion, four million, two hundred eleven thousand, two hundred forty".