118243407 has 4 divisors (see below), whose sum is σ = 157657880. Its totient is φ = 78828936.

The previous prime is 118243361. The next prime is 118243417. The reversal of 118243407 is 704342811.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 118243407 - 2¹¹ = 118241359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118243417) 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 3 ways as a sum of consecutive naturals, for example, 19707232 + ... + 19707237.

It is an arithmetic number, because the mean of its divisors is an integer number (39414470).

Almost surely, 2^118243407 is an apocalyptic number.

118243407 is a deficient number, since it is larger than the sum of its proper divisors (39414473).

118243407 is an equidigital number, since it uses as much as digits as its factorization.

118243407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39414472.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 118243407 is about 10873.9784347772. The cubic root of 118243407 is about 490.8238355470.

The spelling of 118243407 in words is "one hundred eighteen million, two hundred forty-three thousand, four hundred seven".