166861042 has 8 divisors (see below), whose sum is σ = 253307376. Its totient is φ = 82425252.

The previous prime is 166861031. The next prime is 166861061. The reversal of 166861042 is 240168661.

166861042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 166860989 and 166861007.

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, 502428 + ... + 502759.

It is an arithmetic number, because the mean of its divisors is an integer number (31663422).

Almost surely, 2^166861042 is an apocalyptic number.

166861042 is a deficient number, since it is larger than the sum of its proper divisors (86446334).

166861042 is a wasteful number, since it uses less digits than its factorization.

166861042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005272.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 166861042 is about 12917.4704180037. The cubic root of 166861042 is about 550.5350627711.

The spelling of 166861042 in words is "one hundred sixty-six million, eight hundred sixty-one thousand, forty-two".