118543140 has 36 divisors (see below), whose sum is σ = 359581404. Its totient is φ = 31611456.

The previous prime is 118543129. The next prime is 118543141. The reversal of 118543140 is 41345811.

It is a happy number.

118543140 is a `hidden beast` number, since 118 + 543 + 1 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 68161536 + 50381604 = 8256^2 + 7098^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (118543141) 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 11 ways as a sum of consecutive naturals, for example, 329107 + ... + 329466.

Almost surely, 2^118543140 is an apocalyptic number.

118543140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118543140 is an abundant number, since it is smaller than the sum of its proper divisors (241038264).

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

118543140 is a wasteful number, since it uses less digits than its factorization.

118543140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658588 (or 658583 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 118543140 is about 10887.7518340565. The cubic root of 118543140 is about 491.2382123310.

Adding to 118543140 its reverse (41345811), we get a palindrome (159888951).

The spelling of 118543140 in words is "one hundred eighteen million, five hundred forty-three thousand, one hundred forty".