135060721 has 8 divisors (see below), whose sum is σ = 145476320. Its totient is φ = 124975872.

The previous prime is 135060719. The next prime is 135060727. The reversal of 135060721 is 127060531.

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 135060721 - 2¹ = 135060719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135060727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81840 + ... + 83473.

It is an arithmetic number, because the mean of its divisors is an integer number (18184540).

Almost surely, 2^135060721 is an apocalyptic number.

It is an amenable number.

135060721 is a deficient number, since it is larger than the sum of its proper divisors (10415599).

135060721 is a wasteful number, since it uses less digits than its factorization.

135060721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165375.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 135060721 is about 11621.5627606618. The cubic root of 135060721 is about 513.0696846594.

The spelling of 135060721 in words is "one hundred thirty-five million, sixty thousand, seven hundred twenty-one".