188742241 has 2 divisors, whose sum is σ = 188742242. Its totient is φ = 188742240.

The previous prime is 188742233. The next prime is 188742277. The reversal of 188742241 is 142247881.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129390625 + 59351616 = 11375^2 + 7704^2 .

It is a cyclic number.

It is not a de Polignac number, because 188742241 - 2³ = 188742233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 188742241.

It is not a weakly prime, because it can be changed into another prime (188742221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94371120 + 94371121.

It is an arithmetic number, because the mean of its divisors is an integer number (94371121).

Almost surely, 2^188742241 is an apocalyptic number.

It is an amenable number.

188742241 is a deficient number, since it is larger than the sum of its proper divisors (1).

188742241 is an equidigital number, since it uses as much as digits as its factorization.

188742241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28672, while the sum is 37.

The square root of 188742241 is about 13738.3492822100. The cubic root of 188742241 is about 573.6183497781.

It can be divided in two parts, 18874 and 2241, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 188742241 in words is "one hundred eighty-eight million, seven hundred forty-two thousand, two hundred forty-one".