133426 has 4 divisors (see below), whose sum is σ = 200142. Its totient is φ = 66712.

The previous prime is 133417. The next prime is 133439. The reversal of 133426 is 624331.

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., 93025 + 40401 = 305^2 + 201^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33355 + ... + 33358.

2¹³³⁴²⁶ is an apocalyptic number.

133426 is a deficient number, since it is larger than the sum of its proper divisors (66716).

133426 is an equidigital number, since it uses as much as digits as its factorization.

133426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66715.

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

The square root of 133426 is about 365.2752386900. The cubic root of 133426 is about 51.0991279756.

Adding to 133426 its reverse (624331), we get a palindrome (757757).

The spelling of 133426 in words is "one hundred thirty-three thousand, four hundred twenty-six".