134729557 has 4 divisors (see below), whose sum is σ = 134873676. Its totient is φ = 134585440.

The previous prime is 134729533. The next prime is 134729579. The reversal of 134729557 is 755927431.

134729557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 755927431 = 7 ⋅107989633.

It can be written as a sum of positive squares in 2 ways, for example, as 68046001 + 66683556 = 8249^2 + 8166^2 .

It is a cyclic number.

It is not a de Polignac number, because 134729557 - 2¹⁵ = 134696789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134729587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70648 + ... + 72529.

It is an arithmetic number, because the mean of its divisors is an integer number (33718419).

Almost surely, 2^134729557 is an apocalyptic number.

It is an amenable number.

134729557 is a deficient number, since it is larger than the sum of its proper divisors (144119).

134729557 is an equidigital number, since it uses as much as digits as its factorization.

134729557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144118.

The product of its digits is 264600, while the sum is 43.

The square root of 134729557 is about 11607.3061904992. The cubic root of 134729557 is about 512.6499986877.

The spelling of 134729557 in words is "one hundred thirty-four million, seven hundred twenty-nine thousand, five hundred fifty-seven".