1166421060842 has 4 divisors (see below), whose sum is σ = 1749631591266. Its totient is φ = 583210530420.

The previous prime is 1166421060821. The next prime is 1166421060853. The reversal of 1166421060842 is 2480601246611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 956071328521 + 210349732321 = 977789^2 + 458639^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1166421060842.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 291605265209 + ... + 291605265212.

Almost surely, 2^{1166421060842} is an apocalyptic number.

1166421060842 is a deficient number, since it is larger than the sum of its proper divisors (583210530424).

1166421060842 is an equidigital number, since it uses as much as digits as its factorization.

1166421060842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583210530423.

The product of its (nonzero) digits is 110592, while the sum is 41.

The spelling of 1166421060842 in words is "one trillion, one hundred sixty-six billion, four hundred twenty-one million, sixty thousand, eight hundred forty-two".