134912721 has 8 divisors (see below), whose sum is σ = 179938944. Its totient is φ = 89914160.

The previous prime is 134912707. The next prime is 134912737. The reversal of 134912721 is 127219431.

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 134912721 - 2⁵ = 134912689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134912761) 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, 11395 + ... + 19991.

It is an arithmetic number, because the mean of its divisors is an integer number (22492368).

Almost surely, 2^134912721 is an apocalyptic number.

It is an amenable number.

134912721 is a deficient number, since it is larger than the sum of its proper divisors (45026223).

134912721 is an equidigital number, since it uses as much as digits as its factorization.

134912721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13831.

The product of its digits is 3024, while the sum is 30.

The square root of 134912721 is about 11615.1935412201. The cubic root of 134912721 is about 512.8822083252.

The spelling of 134912721 in words is "one hundred thirty-four million, nine hundred twelve thousand, seven hundred twenty-one".