166658942 has 8 divisors (see below), whose sum is σ = 250047000. Its totient is φ = 83309944.

The previous prime is 166658923. The next prime is 166658951. The reversal of 166658942 is 249856661.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5984 + ... + 19212.

It is an arithmetic number, because the mean of its divisors is an integer number (31255875).

Almost surely, 2^166658942 is an apocalyptic number.

166658942 is a deficient number, since it is larger than the sum of its proper divisors (83388058).

166658942 is a wasteful number, since it uses less digits than its factorization.

166658942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19530.

The product of its digits is 622080, while the sum is 47.

The square root of 166658942 is about 12909.6453088379. The cubic root of 166658942 is about 550.3127059220.

The spelling of 166658942 in words is "one hundred sixty-six million, six hundred fifty-eight thousand, nine hundred forty-two".