116542681 has 4 divisors (see below), whose sum is σ = 118282192. Its totient is φ = 114803172.

The previous prime is 116542669. The next prime is 116542697. The reversal of 116542681 is 186245611.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 186245611 = 5419 ⋅34369.

It is a cyclic number.

It is not a de Polignac number, because 116542681 - 2⁵ = 116542649 is a prime.

It is a super-2 number, since 2×116542681² = 27164392989335522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (116542631) 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, 869655 + ... + 869788.

It is an arithmetic number, because the mean of its divisors is an integer number (29570548).

Almost surely, 2^116542681 is an apocalyptic number.

It is an amenable number.

116542681 is a deficient number, since it is larger than the sum of its proper divisors (1739511).

116542681 is an equidigital number, since it uses as much as digits as its factorization.

116542681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739510.

The product of its digits is 11520, while the sum is 34.

The square root of 116542681 is about 10795.4935505515. The cubic root of 116542681 is about 488.4592461358.

The spelling of 116542681 in words is "one hundred sixteen million, five hundred forty-two thousand, six hundred eighty-one".