134021 has 4 divisors (see below), whose sum is σ = 139872. Its totient is φ = 128172.

The previous prime is 133999. The next prime is 134033. The reversal of 134021 is 120431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 133993 and 134011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134081) 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 in 3 ways as a sum of consecutive naturals, for example, 2891 + ... + 2936.

It is an arithmetic number, because the mean of its divisors is an integer number (34968).

2¹³⁴⁰²¹ is an apocalyptic number.

It is an amenable number.

134021 is a deficient number, since it is larger than the sum of its proper divisors (5851).

134021 is an equidigital number, since it uses as much as digits as its factorization.

134021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5850.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 134021 is about 366.0887870449. The cubic root of 134021 is about 51.1749725093.

Adding to 134021 its reverse (120431), we get a palindrome (254452).

The spelling of 134021 in words is "one hundred thirty-four thousand, twenty-one".