134133521 has 6 divisors (see below), whose sum is σ = 141565122. Its totient is φ = 127073520.

The previous prime is 134133511. The next prime is 134133523. The reversal of 134133521 is 125331431.

It can be written as a sum of positive squares in only one way, i.e., 106832896 + 27300625 = 10336^2 + 5225^2 .

It is not a de Polignac number, because 134133521 - 2⁶ = 134133457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134133523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 185420 + ... + 186141.

It is an arithmetic number, because the mean of its divisors is an integer number (23594187).

Almost surely, 2^134133521 is an apocalyptic number.

It is an amenable number.

134133521 is a deficient number, since it is larger than the sum of its proper divisors (7431601).

134133521 is an equidigital number, since it uses as much as digits as its factorization.

134133521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371599 (or 371580 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 134133521 is about 11581.6026956549. The cubic root of 134133521 is about 511.8929028621.

Adding to 134133521 its reverse (125331431), we get a palindrome (259464952).

The spelling of 134133521 in words is "one hundred thirty-four million, one hundred thirty-three thousand, five hundred twenty-one".