118921240 has 16 divisors (see below), whose sum is σ = 267572880. Its totient is φ = 47568480.

The previous prime is 118921223. The next prime is 118921261. The reversal of 118921240 is 42129811.

It is a super-2 number, since 2×118921240² = 28284522646275200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 118921199 and 118921208.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1486476 + ... + 1486555.

It is an arithmetic number, because the mean of its divisors is an integer number (16723305).

Almost surely, 2^118921240 is an apocalyptic number.

118921240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

118921240 is an abundant number, since it is smaller than the sum of its proper divisors (148651640).

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

118921240 is a wasteful number, since it uses less digits than its factorization.

118921240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2973042 (or 2973038 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 118921240 is about 10905.1015584450. The cubic root of 118921240 is about 491.7599353207.

The spelling of 118921240 in words is "one hundred eighteen million, nine hundred twenty-one thousand, two hundred forty".