136740271 has 4 divisors (see below), whose sum is σ = 140435992. Its totient is φ = 133044552.

The previous prime is 136740269. The next prime is 136740281. The reversal of 136740271 is 172047631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172047631 = 7 ⋅24578233.

It is a cyclic number.

It is not a de Polignac number, because 136740271 - 2¹ = 136740269 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 (136740281) 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, 1847805 + ... + 1847878.

It is an arithmetic number, because the mean of its divisors is an integer number (35108998).

Almost surely, 2^136740271 is an apocalyptic number.

136740271 is a deficient number, since it is larger than the sum of its proper divisors (3695721).

136740271 is an equidigital number, since it uses as much as digits as its factorization.

136740271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3695720.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 136740271 is about 11693.5995741260. The cubic root of 136740271 is about 515.1876916654.

The spelling of 136740271 in words is "one hundred thirty-six million, seven hundred forty thousand, two hundred seventy-one".