166273742 has 8 divisors (see below), whose sum is σ = 250338600. Its totient is φ = 82827544.

The previous prime is 166273727. The next prime is 166273747. The reversal of 166273742 is 247372661.

166273742 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 = 166273696 and 166273705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166273747) 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, 153992 + ... + 155067.

It is an arithmetic number, because the mean of its divisors is an integer number (31292325).

Almost surely, 2^166273742 is an apocalyptic number.

166273742 is a deficient number, since it is larger than the sum of its proper divisors (84064858).

166273742 is a wasteful number, since it uses less digits than its factorization.

166273742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309330.

The product of its digits is 84672, while the sum is 38.

The square root of 166273742 is about 12894.7176006301. The cubic root of 166273742 is about 549.8883982928. Note that the first 3 decimals are identical.

The spelling of 166273742 in words is "one hundred sixty-six million, two hundred seventy-three thousand, seven hundred forty-two".