1263753243042 has 16 divisors (see below), whose sum is σ = 2531207089440. Its totient is φ = 420634313792.

The previous prime is 1263753243041. The next prime is 1263753243059. The reversal of 1263753243042 is 2403423573621.

It is a junction number, because it is equal to n+sod(n) for n = 1263753242985 and 1263753243003.

It is not an unprimeable number, because it can be changed into a prime (1263753243041) 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 7 ways as a sum of consecutive naturals, for example, 154187367 + ... + 154195562.

It is an arithmetic number, because the mean of its divisors is an integer number (158200443090).

Almost surely, 2^{1263753243042} is an apocalyptic number.

1263753243042 is an abundant number, since it is smaller than the sum of its proper divisors (1267453846398).

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

1263753243042 is a wasteful number, since it uses less digits than its factorization.

1263753243042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308383617.

The product of its (nonzero) digits is 725760, while the sum is 42.

The spelling of 1263753243042 in words is "one trillion, two hundred sixty-three billion, seven hundred fifty-three million, two hundred forty-three thousand, forty-two".