136426 has 4 divisors (see below), whose sum is σ = 204642. Its totient is φ = 68212.

The previous prime is 136421. The next prime is 136429. The reversal of 136426 is 624631.

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

It can be written as a sum of positive squares in only one way, i.e., 123201 + 13225 = 351^2 + 115^2 .

It is a super-2 number, since 2×136426² = 37224106952, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 136397 and 136406.

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 as a sum of consecutive naturals, namely, 34105 + ... + 34108.

2¹³⁶⁴²⁶ is an apocalyptic number.

136426 is a deficient number, since it is larger than the sum of its proper divisors (68216).

136426 is an equidigital number, since it uses as much as digits as its factorization.

136426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68215.

The product of its digits is 864, while the sum is 22.

The square root of 136426 is about 369.3589040486. The cubic root of 136426 is about 51.4792702569.

It can be divided in two parts, 13 and 6426, that multiplied together give a palindrome (83538).

The spelling of 136426 in words is "one hundred thirty-six thousand, four hundred twenty-six".