134525921 has 4 divisors (see below), whose sum is σ = 135382932. Its totient is φ = 133668912.

The previous prime is 134525869. The next prime is 134525927. The reversal of 134525921 is 129525431.

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 11560000 + 122965921 = 3400^2 + 11089^2 .

It is a cyclic number.

It is not a de Polignac number, because 134525921 - 2¹⁸ = 134263777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134525927) 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, 428270 + ... + 428583.

It is an arithmetic number, because the mean of its divisors is an integer number (33845733).

Almost surely, 2^134525921 is an apocalyptic number.

It is an amenable number.

134525921 is a deficient number, since it is larger than the sum of its proper divisors (857011).

134525921 is an equidigital number, since it uses as much as digits as its factorization.

134525921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857010.

The product of its digits is 10800, while the sum is 32.

The square root of 134525921 is about 11598.5309845687. The cubic root of 134525921 is about 512.3915880938.

The spelling of 134525921 in words is "one hundred thirty-four million, five hundred twenty-five thousand, nine hundred twenty-one".