166368842 has 4 divisors (see below), whose sum is σ = 249553266. Its totient is φ = 83184420.

The previous prime is 166368841. The next prime is 166368859. The reversal of 166368842 is 248863661.

166368842 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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., 163302841 + 3066001 = 12779^2 + 1751^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166368793 and 166368802.

It is not an unprimeable number, because it can be changed into a prime (166368841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41592209 + ... + 41592212.

Almost surely, 2^166368842 is an apocalyptic number.

166368842 is a deficient number, since it is larger than the sum of its proper divisors (83184424).

166368842 is an equidigital number, since it uses as much as digits as its factorization.

166368842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83184423.

The product of its digits is 331776, while the sum is 44.

The square root of 166368842 is about 12898.4046300308. The cubic root of 166368842 is about 549.9932142413.

The spelling of 166368842 in words is "one hundred sixty-six million, three hundred sixty-eight thousand, eight hundred forty-two".