134260561 has 4 divisors (see below), whose sum is σ = 135010800. Its totient is φ = 133510324.

The previous prime is 134260559. The next prime is 134260571. The reversal of 134260561 is 165062431.

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: 165062431 = 1669 ⋅98899.

It is a cyclic number.

It is not a de Polignac number, because 134260561 - 2¹ = 134260559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134260571) 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, 374851 + ... + 375208.

It is an arithmetic number, because the mean of its divisors is an integer number (33752700).

Almost surely, 2^134260561 is an apocalyptic number.

It is an amenable number.

134260561 is a deficient number, since it is larger than the sum of its proper divisors (750239).

134260561 is an equidigital number, since it uses as much as digits as its factorization.

134260561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750238.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 134260561 is about 11587.0859580828. The cubic root of 134260561 is about 512.0544591832.

The spelling of 134260561 in words is "one hundred thirty-four million, two hundred sixty thousand, five hundred sixty-one".