136144871 has 4 divisors (see below), whose sum is σ = 138176952. Its totient is φ = 134112792.

The previous prime is 136144859. The next prime is 136144873. The reversal of 136144871 is 178441631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 136144871 - 2¹⁸ = 135882727 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 (136144873) 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, 1015940 + ... + 1016073.

It is an arithmetic number, because the mean of its divisors is an integer number (34544238).

Almost surely, 2^136144871 is an apocalyptic number.

136144871 is a deficient number, since it is larger than the sum of its proper divisors (2032081).

136144871 is an equidigital number, since it uses as much as digits as its factorization.

136144871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032080.

The product of its digits is 16128, while the sum is 35.

The square root of 136144871 is about 11668.1134293424. The cubic root of 136144871 is about 514.4388533994.

The spelling of 136144871 in words is "one hundred thirty-six million, one hundred forty-four thousand, eight hundred seventy-one".