134461721 has 4 divisors (see below), whose sum is σ = 142371252. Its totient is φ = 126552192.

The previous prime is 134461711. The next prime is 134461729. The reversal of 134461721 is 127164431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122655625 + 11806096 = 11075^2 + 3436^2 .

It is a cyclic number.

It is not a de Polignac number, because 134461721 - 2¹⁸ = 134199577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134461729) 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, 3954740 + ... + 3954773.

It is an arithmetic number, because the mean of its divisors is an integer number (35592813).

Almost surely, 2^134461721 is an apocalyptic number.

It is an amenable number.

134461721 is a deficient number, since it is larger than the sum of its proper divisors (7909531).

134461721 is an equidigital number, since it uses as much as digits as its factorization.

134461721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7909530.

The product of its digits is 4032, while the sum is 29.

The square root of 134461721 is about 11595.7630624293. The cubic root of 134461721 is about 512.3100653310.

The spelling of 134461721 in words is "one hundred thirty-four million, four hundred sixty-one thousand, seven hundred twenty-one".