166380842 has 8 divisors (see below), whose sum is σ = 249628932. Its totient is φ = 83171200.

The previous prime is 166380839. The next prime is 166380871. The reversal of 166380842 is 248083661.

It is a happy number.

166380842 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 124791241 + 41589601 = 11171^2 + 6449^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 166380796 and 166380805.

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, 6842 + ... + 19482.

Almost surely, 2^166380842 is an apocalyptic number.

166380842 is a deficient number, since it is larger than the sum of its proper divisors (83248090).

166380842 is a wasteful number, since it uses less digits than its factorization.

166380842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19224.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 166380842 is about 12898.8697954511. The cubic root of 166380842 is about 550.0064373902.

The spelling of 166380842 in words is "one hundred sixty-six million, three hundred eighty thousand, eight hundred forty-two".