166699242 has 16 divisors (see below), whose sum is σ = 370442880. Its totient is φ = 55566396.

The previous prime is 166699241. The next prime is 166699289. The reversal of 166699242 is 242996661.

It is not an unprimeable number, because it can be changed into a prime (166699241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1543458 + ... + 1543565.

It is an arithmetic number, because the mean of its divisors is an integer number (23152680).

Almost surely, 2^166699242 is an apocalyptic number.

166699242 is an abundant number, since it is smaller than the sum of its proper divisors (203743638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166699242 is a wasteful number, since it uses less digits than its factorization.

166699242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3087034 (or 3087028 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 166699242 is about 12911.2060629517. The cubic root of 166699242 is about 550.3570596071.

The spelling of 166699242 in words is "one hundred sixty-six million, six hundred ninety-nine thousand, two hundred forty-two".