134438 has 4 divisors (see below), whose sum is σ = 201660. Its totient is φ = 67218.

The previous prime is 134437. The next prime is 134443. The reversal of 134438 is 834431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 834431 = 13 ⋅64187.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 134438.

It is not an unprimeable number, because it can be changed into a prime (134437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33608 + ... + 33611.

It is an arithmetic number, because the mean of its divisors is an integer number (50415).

2¹³⁴⁴³⁸ is an apocalyptic number.

134438 is a deficient number, since it is larger than the sum of its proper divisors (67222).

134438 is an equidigital number, since it uses as much as digits as its factorization.

134438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67221.

The product of its digits is 1152, while the sum is 23.

The square root of 134438 is about 366.6578786826. The cubic root of 134438 is about 51.2279937248.

Adding to 134438 its reverse (834431), we get a palindrome (968869).

The spelling of 134438 in words is "one hundred thirty-four thousand, four hundred thirty-eight".