1242243312000 has 256 divisors, whose sum is σ = 4360276889280. Its totient is φ = 311778508800.

The previous prime is 1242243311989. The next prime is 1242243312001. The reversal of 1242243312000 is 2133422421.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242243312001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54822 + ... + 1577178.

Almost surely, 2^{1242243312000} is an apocalyptic number.

1242243312000 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 1242243312000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2180138444640).

1242243312000 is an abundant number, since it is smaller than the sum of its proper divisors (3118033577280).

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

1242243312000 is a wasteful number, since it uses less digits than its factorization.

1242243312000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522406 (or 1522384 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1242243312000 its reverse (2133422421), we get a palindrome (1244376734421).

The spelling of 1242243312000 in words is "one trillion, two hundred forty-two billion, two hundred forty-three million, three hundred twelve thousand".