166507042 has 8 divisors (see below), whose sum is σ = 268972956. Its totient is φ = 76849392.

The previous prime is 166507037. The next prime is 166507057. The reversal of 166507042 is 240705661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 165868641 + 638401 = 12879^2 + 799^2 .

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 = 166506995 and 166507013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3202033 + ... + 3202084.

Almost surely, 2^166507042 is an apocalyptic number.

166507042 is a deficient number, since it is larger than the sum of its proper divisors (102465914).

166507042 is a wasteful number, since it uses less digits than its factorization.

166507042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6404132.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 166507042 is about 12903.7607696361. The cubic root of 166507042 is about 550.1454623516.

The spelling of 166507042 in words is "one hundred sixty-six million, five hundred seven thousand, forty-two".