1242290649600 has 5040 divisors, whose sum is σ = 6638525419680. Its totient is φ = 225740390400.

The previous prime is 1242290649559. The next prime is 1242290649623. The reversal of 1242290649600 is 69460922421.

1242290649600 is a `hidden beast` number, since 1 + 242 + 290 + 64 + 9 + 60 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (5040).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 503 ways as a sum of consecutive naturals, for example, 65383718391 + ... + 65383718409.

It is an arithmetic number, because the mean of its divisors is an integer number (1317167742).

Almost surely, 2^{1242290649600} is an apocalyptic number.

1242290649600 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 1242290649600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3319262709840).

1242290649600 is an abundant number, since it is smaller than the sum of its proper divisors (5396234770080).

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

1242290649600 is a wasteful number, since it uses less digits than its factorization.

1242290649600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 1242290649600 in words is "one trillion, two hundred forty-two billion, two hundred ninety million, six hundred forty-nine thousand, six hundred".