166512442 has 8 divisors (see below), whose sum is σ = 252778176. Its totient is φ = 82253052.

The previous prime is 166512421. The next prime is 166512449. The reversal of 166512442 is 244215661.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (166512449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501378 + ... + 501709.

It is an arithmetic number, because the mean of its divisors is an integer number (31597272).

Almost surely, 2^166512442 is an apocalyptic number.

166512442 is a deficient number, since it is larger than the sum of its proper divisors (86265734).

166512442 is a wasteful number, since it uses less digits than its factorization.

166512442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003172.

The product of its digits is 11520, while the sum is 31.

The square root of 166512442 is about 12903.9700092646. The cubic root of 166512442 is about 550.1514095543.

The spelling of 166512442 in words is "one hundred sixty-six million, five hundred twelve thousand, four hundred forty-two".