136916642 has 4 divisors (see below), whose sum is σ = 205374966. Its totient is φ = 68458320.

The previous prime is 136916617. The next prime is 136916651. The reversal of 136916642 is 246619631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246619631 = 173 ⋅1425547.

It can be written as a sum of positive squares in only one way, i.e., 119268241 + 17648401 = 10921^2 + 4201^2 .

It is a junction number, because it is equal to n+sod(n) for n = 136916596 and 136916605.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 34229159 + ... + 34229162.

Almost surely, 2^136916642 is an apocalyptic number.

136916642 is a deficient number, since it is larger than the sum of its proper divisors (68458324).

136916642 is an equidigital number, since it uses as much as digits as its factorization.

136916642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68458323.

The product of its digits is 46656, while the sum is 38.

The square root of 136916642 is about 11701.1384916170. The cubic root of 136916642 is about 515.4090971309.

The spelling of 136916642 in words is "one hundred thirty-six million, nine hundred sixteen thousand, six hundred forty-two".