136423 has 4 divisors (see below), whose sum is σ = 155920. Its totient is φ = 116928.

The previous prime is 136421. The next prime is 136429. The reversal of 136423 is 324631.

136423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324631 = 73 ⋅4447.

It is not a de Polignac number, because 136423 - 2¹ = 136421 is a prime.

It is a super-2 number, since 2×136423² = 37222469858, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136421) 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, 9738 + ... + 9751.

It is an arithmetic number, because the mean of its divisors is an integer number (38980).

2¹³⁶⁴²³ is an apocalyptic number.

136423 is a deficient number, since it is larger than the sum of its proper divisors (19497).

136423 is an equidigital number, since it uses as much as digits as its factorization.

136423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19496.

The product of its digits is 432, while the sum is 19.

The square root of 136423 is about 369.3548429356. The cubic root of 136423 is about 51.4788929121.

The spelling of 136423 in words is "one hundred thirty-six thousand, four hundred twenty-three".