134320021 has 8 divisors (see below), whose sum is σ = 146808288. Its totient is φ = 121878000.

The previous prime is 134320019. The next prime is 134320033. The reversal of 134320021 is 120023431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 134320021 - 2¹ = 134320019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 134319977 and 134320004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134320061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5335 + ... + 17236.

It is an arithmetic number, because the mean of its divisors is an integer number (18351036).

Almost surely, 2^134320021 is an apocalyptic number.

134320021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

134320021 is a deficient number, since it is larger than the sum of its proper divisors (12488267).

134320021 is a wasteful number, since it uses less digits than its factorization.

134320021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23123.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 134320021 is about 11589.6514615410. The cubic root of 134320021 is about 512.1300392453.

Adding to 134320021 its reverse (120023431), we get a palindrome (254343452).

The spelling of 134320021 in words is "one hundred thirty-four million, three hundred twenty thousand, twenty-one".