1242181100164 has 24 divisors (see below), whose sum is σ = 2226922607448. Its totient is φ = 605918664960.

The previous prime is 1242181100161. The next prime is 1242181100221. The reversal of 1242181100164 is 4610011812421.

It can be written as a sum of positive squares in 4 ways, for example, as 182397326400 + 1059783773764 = 427080^2 + 1029458^2 .

It is not an unprimeable number, because it can be changed into a prime (1242181100161) 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, 4593894 + ... + 4856770.

It is an arithmetic number, because the mean of its divisors is an integer number (92788441977).

Almost surely, 2^{1242181100164} is an apocalyptic number.

It is an amenable number.

1242181100164 is a deficient number, since it is larger than the sum of its proper divisors (984741507284).

1242181100164 is a wasteful number, since it uses less digits than its factorization.

1242181100164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291735 (or 291733 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

Adding to 1242181100164 its reverse (4610011812421), we get a palindrome (5852192912585).

The spelling of 1242181100164 in words is "one trillion, two hundred forty-two billion, one hundred eighty-one million, one hundred thousand, one hundred sixty-four".