136443 has 4 divisors (see below), whose sum is σ = 181928. Its totient is φ = 90960.

The previous prime is 136429. The next prime is 136447. The reversal of 136443 is 344631.

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

It is not a de Polignac number, because 136443 - 2⁶ = 136379 is a prime.

It is a D-number.

It is a Duffinian number.

136443 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (136447) 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, 22738 + ... + 22743.

It is an arithmetic number, because the mean of its divisors is an integer number (45482).

2¹³⁶⁴⁴³ is an apocalyptic number.

136443 is a deficient number, since it is larger than the sum of its proper divisors (45485).

136443 is an equidigital number, since it uses as much as digits as its factorization.

136443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45484.

The product of its digits is 864, while the sum is 21.

The square root of 136443 is about 369.3819161789. The cubic root of 136443 is about 51.4814084399.

The spelling of 136443 in words is "one hundred thirty-six thousand, four hundred forty-three".