134524021 has 4 divisors (see below), whose sum is σ = 135856044. Its totient is φ = 133192000.

The previous prime is 134524001. The next prime is 134524057. The reversal of 134524021 is 120425431.

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 62188996 + 72335025 = 7886^2 + 8505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134524021 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134523983 and 134524001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134524001) 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, 665860 + ... + 666061.

It is an arithmetic number, because the mean of its divisors is an integer number (33964011).

Almost surely, 2^134524021 is an apocalyptic number.

It is an amenable number.

134524021 is a deficient number, since it is larger than the sum of its proper divisors (1332023).

134524021 is a wasteful number, since it uses less digits than its factorization.

134524021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332022.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 134524021 is about 11598.4490773551. The cubic root of 134524021 is about 512.3891757989.

Adding to 134524021 its reverse (120425431), we get a palindrome (254949452).

The spelling of 134524021 in words is "one hundred thirty-four million, five hundred twenty-four thousand, twenty-one".