116878121 has 4 divisors (see below), whose sum is σ = 116905044. Its totient is φ = 116851200.

The previous prime is 116878087. The next prime is 116878127. The reversal of 116878121 is 121878611.

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

It can be written as a sum of positive squares in 2 ways, for example, as 84842521 + 32035600 = 9211^2 + 5660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116878121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116878127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5300 + ... + 16181.

It is an arithmetic number, because the mean of its divisors is an integer number (29226261).

Almost surely, 2^116878121 is an apocalyptic number.

It is an amenable number.

116878121 is a deficient number, since it is larger than the sum of its proper divisors (26923).

116878121 is an equidigital number, since it uses as much as digits as its factorization.

116878121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26922.

The product of its digits is 5376, while the sum is 35.

The square root of 116878121 is about 10811.0184996604. The cubic root of 116878121 is about 488.9274346120.

The spelling of 116878121 in words is "one hundred sixteen million, eight hundred seventy-eight thousand, one hundred twenty-one".