136127279 has 4 divisors (see below), whose sum is σ = 144134784. Its totient is φ = 128119776.

The previous prime is 136127249. The next prime is 136127297. The reversal of 136127279 is 972721631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 972721631 = 7 ⋅138960233.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136127279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136127249) by changing a digit.

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, 4003727 + ... + 4003760.

It is an arithmetic number, because the mean of its divisors is an integer number (36033696).

Almost surely, 2^136127279 is an apocalyptic number.

136127279 is a deficient number, since it is larger than the sum of its proper divisors (8007505).

136127279 is an equidigital number, since it uses as much as digits as its factorization.

136127279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8007504.

The product of its digits is 31752, while the sum is 38.

The square root of 136127279 is about 11667.3595556150. The cubic root of 136127279 is about 514.4166946552.

The spelling of 136127279 in words is "one hundred thirty-six million, one hundred twenty-seven thousand, two hundred seventy-nine".