136745047 has 4 divisors (see below), whose sum is σ = 137042136. Its totient is φ = 136447960.

The previous prime is 136745041. The next prime is 136745083. The reversal of 136745047 is 740547631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740547631 = 163 ⋅4543237.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136745047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136744997 and 136745015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136745041) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 147853 + ... + 148774.

It is an arithmetic number, because the mean of its divisors is an integer number (34260534).

Almost surely, 2^136745047 is an apocalyptic number.

136745047 is a deficient number, since it is larger than the sum of its proper divisors (297089).

136745047 is an equidigital number, since it uses as much as digits as its factorization.

136745047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297088.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 136745047 is about 11693.8037866214. The cubic root of 136745047 is about 515.1936896735.

It can be divided in two parts, 13674 and 5047, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 136745047 in words is "one hundred thirty-six million, seven hundred forty-five thousand, forty-seven".