118981240 has 64 divisors (see below), whose sum is σ = 310196160. Its totient is φ = 40227840.

The previous prime is 118981223. The next prime is 118981241. The reversal of 118981240 is 42189811.

It is a junction number, because it is equal to n+sod(n) for n = 118981196 and 118981205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118981241) 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 15 ways as a sum of consecutive naturals, for example, 17530 + ... + 23350.

It is an arithmetic number, because the mean of its divisors is an integer number (4846815).

Almost surely, 2^118981240 is an apocalyptic number.

118981240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 118981240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155098080).

118981240 is an abundant number, since it is smaller than the sum of its proper divisors (191214920).

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

118981240 is a wasteful number, since it uses less digits than its factorization.

118981240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5912 (or 5908 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 118981240 is about 10907.8522175541. The cubic root of 118981240 is about 491.8426248815.

The spelling of 118981240 in words is "one hundred eighteen million, nine hundred eighty-one thousand, two hundred forty".