201942166 has 8 divisors (see below), whose sum is σ = 306036360. Its totient is φ = 99930048.

The previous prime is 201942161. The next prime is 201942193. The reversal of 201942166 is 661249102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201942161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520276 + ... + 520663.

It is an arithmetic number, because the mean of its divisors is an integer number (38254545).

Almost surely, 2^201942166 is an apocalyptic number.

201942166 is a deficient number, since it is larger than the sum of its proper divisors (104094194).

201942166 is a wasteful number, since it uses less digits than its factorization.

201942166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041038.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 201942166 is about 14210.6356648814. The cubic root of 201942166 is about 586.6904289761.

The spelling of 201942166 in words is "two hundred one million, nine hundred forty-two thousand, one hundred sixty-six".