134712521 has 8 divisors (see below), whose sum is σ = 137025504. Its totient is φ = 132412320.

The previous prime is 134712499. The next prime is 134712551. The reversal of 134712521 is 125217431.

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 134712521 - 2¹⁰ = 134711497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (134712551) 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, 19406 + ... + 25416.

It is an arithmetic number, because the mean of its divisors is an integer number (17128188).

Almost surely, 2^134712521 is an apocalyptic number.

It is an amenable number.

134712521 is a deficient number, since it is larger than the sum of its proper divisors (2312983).

134712521 is an equidigital number, since it uses as much as digits as its factorization.

134712521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6391.

The product of its digits is 1680, while the sum is 26.

The square root of 134712521 is about 11606.5723191647. The cubic root of 134712521 is about 512.6283902802.

Adding to 134712521 its reverse (125217431), we get a palindrome (259929952).

The spelling of 134712521 in words is "one hundred thirty-four million, seven hundred twelve thousand, five hundred twenty-one".