166787842 has 8 divisors (see below), whose sum is σ = 269426556. Its totient is φ = 76978992.

The previous prime is 166787839. The next prime is 166787923. The reversal of 166787842 is 248787661.

It is a happy number.

166787842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 166177881 + 609961 = 12891^2 + 781^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3207433 + ... + 3207484.

Almost surely, 2^166787842 is an apocalyptic number.

166787842 is a deficient number, since it is larger than the sum of its proper divisors (102638714).

166787842 is a wasteful number, since it uses less digits than its factorization.

166787842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6414932.

The product of its digits is 903168, while the sum is 49.

The square root of 166787842 is about 12914.6367351157. The cubic root of 166787842 is about 550.4545465513.

The spelling of 166787842 in words is "one hundred sixty-six million, seven hundred eighty-seven thousand, eight hundred forty-two".