118171242 has 36 divisors (see below), whose sum is σ = 297841986. Its totient is φ = 33762960.

The previous prime is 118171237. The next prime is 118171243. The reversal of 118171242 is 242171811.

It can be written as a sum of positive squares in only one way, i.e., 60699681 + 57471561 = 7791^2 + 7581^2 .

It is not an unprimeable number, because it can be changed into a prime (118171243) by changing a digit.

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 in 17 ways as a sum of consecutive naturals, for example, 66109 + ... + 67872.

Almost surely, 2^118171242 is an apocalyptic number.

118171242 is an abundant number, since it is smaller than the sum of its proper divisors (179670744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

118171242 is a wasteful number, since it uses less digits than its factorization.

118171242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134003 (or 133993 counting only the distinct ones).

The product of its digits is 896, while the sum is 27.

The square root of 118171242 is about 10870.6596855941. The cubic root of 118171242 is about 490.7239638467.

The spelling of 118171242 in words is "one hundred eighteen million, one hundred seventy-one thousand, two hundred forty-two".