116421155 has 4 divisors (see below), whose sum is σ = 139705392. Its totient is φ = 93136920.

The previous prime is 116421139. The next prime is 116421163. The reversal of 116421155 is 551124611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 551124611 = 6221 ⋅88591.

It is not a de Polignac number, because 116421155 - 2⁴ = 116421139 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 11642111 + ... + 11642120.

It is an arithmetic number, because the mean of its divisors is an integer number (34926348).

Almost surely, 2^116421155 is an apocalyptic number.

116421155 is a deficient number, since it is larger than the sum of its proper divisors (23284237).

116421155 is an equidigital number, since it uses as much as digits as its factorization.

116421155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23284236.

The product of its digits is 1200, while the sum is 26.

The square root of 116421155 is about 10789.8635301842. The cubic root of 116421155 is about 488.2894052308.

Adding to 116421155 its reverse (551124611), we get a palindrome (667545766).

The spelling of 116421155 in words is "one hundred sixteen million, four hundred twenty-one thousand, one hundred fifty-five".