188171042 has 4 divisors (see below), whose sum is σ = 282256566. Its totient is φ = 94085520.

The previous prime is 188171029. The next prime is 188171059. The reversal of 188171042 is 240171881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240171881 = 29 ⋅8281789.

It can be written as a sum of positive squares in only one way, i.e., 168714121 + 19456921 = 12989^2 + 4411^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47042759 + ... + 47042762.

Almost surely, 2^188171042 is an apocalyptic number.

188171042 is a deficient number, since it is larger than the sum of its proper divisors (94085524).

188171042 is an equidigital number, since it uses as much as digits as its factorization.

188171042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94085523.

The product of its (nonzero) digits is 3584, while the sum is 32.

The square root of 188171042 is about 13717.5450427546. The cubic root of 188171042 is about 573.0391095219.

The spelling of 188171042 in words is "one hundred eighty-eight million, one hundred seventy-one thousand, forty-two".