1242243525216 has 96 divisors (see below), whose sum is σ = 3312062701920. Its totient is φ = 407605284864.

The previous prime is 1242243525191. The next prime is 1242243525223. The reversal of 1242243525216 is 6125253422421.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3392946 + ... + 3741198.

It is an arithmetic number, because the mean of its divisors is an integer number (34500653145).

Almost surely, 2^{1242243525216} is an apocalyptic number.

1242243525216 is a gapful number since it is divisible by the number (16) 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 1242243525216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1656031350960).

1242243525216 is an abundant number, since it is smaller than the sum of its proper divisors (2069819176704).

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

1242243525216 is a wasteful number, since it uses less digits than its factorization.

1242243525216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348848 (or 348840 counting only the distinct ones).

The product of its digits is 230400, while the sum is 39.

Adding to 1242243525216 its reverse (6125253422421), we get a palindrome (7367496947637).

The spelling of 1242243525216 in words is "one trillion, two hundred forty-two billion, two hundred forty-three million, five hundred twenty-five thousand, two hundred sixteen".