118126987 has 4 divisors (see below), whose sum is σ = 128865816. Its totient is φ = 107388160.

The previous prime is 118126973. The next prime is 118126991. The reversal of 118126987 is 789621811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789621811 = 11 ⋅71783801.

It is not a de Polignac number, because 118126987 - 2¹⁵ = 118094219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118126937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5369398 + ... + 5369419.

It is an arithmetic number, because the mean of its divisors is an integer number (32216454).

Almost surely, 2^118126987 is an apocalyptic number.

118126987 is a deficient number, since it is larger than the sum of its proper divisors (10738829).

118126987 is a wasteful number, since it uses less digits than its factorization.

118126987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10738828.

The product of its digits is 48384, while the sum is 43.

The square root of 118126987 is about 10868.6239699421. The cubic root of 118126987 is about 490.6626976700.

The spelling of 118126987 in words is "one hundred eighteen million, one hundred twenty-six thousand, nine hundred eighty-seven".