1171220503842 has 24 divisors (see below), whose sum is σ = 2569766509440. Its totient is φ = 385464975480.

The previous prime is 1171220503841. The next prime is 1171220503907. The reversal of 1171220503842 is 2483050221711.

1171220503842 is a `hidden beast` number, since 1 + 1 + 7 + 1 + 220 + 50 + 384 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1171220503797 and 1171220503806.

It is not an unprimeable number, because it can be changed into a prime (1171220503841) 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 11 ways as a sum of consecutive naturals, for example, 411820134 + ... + 411822977.

It is an arithmetic number, because the mean of its divisors is an integer number (107073604560).

Almost surely, 2^{1171220503842} is an apocalyptic number.

1171220503842 is an abundant number, since it is smaller than the sum of its proper divisors (1398546005598).

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

1171220503842 is a wasteful number, since it uses less digits than its factorization.

1171220503842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823643198 (or 823643195 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 1171220503842 in words is "one trillion, one hundred seventy-one billion, two hundred twenty million, five hundred three thousand, eight hundred forty-two".