1242961053776 has 20 divisors (see below), whose sum is σ = 2593486045332. Its totient is φ = 573674332416.

The previous prime is 1242961053769. The next prime is 1242961053779. The reversal of 1242961053776 is 6773501692421.

It can be written as a sum of positive squares in 2 ways, for example, as 718466445376 + 524494608400 = 847624^2 + 724220^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242961053779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2987886941 + ... + 2987887356.

Almost surely, 2^{1242961053776} is an apocalyptic number.

1242961053776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1242961053776 is an abundant number, since it is smaller than the sum of its proper divisors (1350524991556).

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

1242961053776 is a wasteful number, since it uses less digits than its factorization.

1242961053776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5975774318 (or 5975774312 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 53.

The spelling of 1242961053776 in words is "one trillion, two hundred forty-two billion, nine hundred sixty-one million, fifty-three thousand, seven hundred seventy-six".