134241721 has 4 divisors (see below), whose sum is σ = 134380944. Its totient is φ = 134102500.

The previous prime is 134241713. The next prime is 134241733. The reversal of 134241721 is 127142431.

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, and also an emirpimes, since its reverse is a distinct semiprime: 127142431 = 13 ⋅9780187.

It is a cyclic number.

It is not a de Polignac number, because 134241721 - 2³ = 134241713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134241761) 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 3 ways as a sum of consecutive naturals, for example, 68155 + ... + 70096.

It is an arithmetic number, because the mean of its divisors is an integer number (33595236).

Almost surely, 2^134241721 is an apocalyptic number.

It is an amenable number.

134241721 is a deficient number, since it is larger than the sum of its proper divisors (139223).

134241721 is an equidigital number, since it uses as much as digits as its factorization.

134241721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139222.

The product of its digits is 1344, while the sum is 25.

The square root of 134241721 is about 11586.2729555280. The cubic root of 134241721 is about 512.0305068594.

The spelling of 134241721 in words is "one hundred thirty-four million, two hundred forty-one thousand, seven hundred twenty-one".