1242501398208 has 672 divisors, whose sum is σ = 4496507136000. Its totient is φ = 336258252288.

The previous prime is 1242501398111. The next prime is 1242501398249. The reversal of 1242501398208 is 8028931052421.

1242501398208 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 50 + 1 + 398 + 208 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a super-2 number, since 2×1242501398208² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 213963241 + ... + 213969047.

Almost surely, 2^{1242501398208} is an apocalyptic number.

1242501398208 is a gapful number since it is divisible by the number (18) 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 1242501398208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2248253568000).

1242501398208 is an abundant number, since it is smaller than the sum of its proper divisors (3254005737792).

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

1242501398208 is an equidigital number, since it uses as much as digits as its factorization.

1242501398208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5887 (or 5838 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 1242501398208 in words is "one trillion, two hundred forty-two billion, five hundred one million, three hundred ninety-eight thousand, two hundred eight".