118121385 has 16 divisors (see below), whose sum is σ = 198941760. Its totient is φ = 59682240.

The previous prime is 118121359. The next prime is 118121401. The reversal of 118121385 is 583121811.

It is not a de Polignac number, because 118121385 - 2⁷ = 118121257 is a prime.

It is an unprimeable number.

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, 206946 + ... + 207515.

It is an arithmetic number, because the mean of its divisors is an integer number (12433860).

Almost surely, 2^118121385 is an apocalyptic number.

118121385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

118121385 is a deficient number, since it is larger than the sum of its proper divisors (80820375).

118121385 is a wasteful number, since it uses less digits than its factorization.

118121385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414488.

The product of its digits is 1920, while the sum is 30.

The square root of 118121385 is about 10868.3662525699. The cubic root of 118121385 is about 490.6549412266.

The spelling of 118121385 in words is "one hundred eighteen million, one hundred twenty-one thousand, three hundred eighty-five".