118242405 has 24 divisors (see below), whose sum is σ = 205890048. Its totient is φ = 62774496.

The previous prime is 118242403. The next prime is 118242419. The reversal of 118242405 is 504242811.

118242405 is a `hidden beast` number, since 1 + 18 + 242 + 405 = 666.

It is not a de Polignac number, because 118242405 - 2¹ = 118242403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118242403) 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 23 ways as a sum of consecutive naturals, for example, 4144 + ... + 15926.

It is an arithmetic number, because the mean of its divisors is an integer number (8578752).

Almost surely, 2^118242405 is an apocalyptic number.

118242405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

118242405 is a deficient number, since it is larger than the sum of its proper divisors (87647643).

118242405 is a wasteful number, since it uses less digits than its factorization.

118242405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12017 (or 12014 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 118242405 is about 10873.9323613861. The cubic root of 118242405 is about 490.8224491219.

The spelling of 118242405 in words is "one hundred eighteen million, two hundred forty-two thousand, four hundred five".