134166521 has 8 divisors (see below), whose sum is σ = 141575040. Its totient is φ = 126889312.

The previous prime is 134166497. The next prime is 134166559. The reversal of 134166521 is 125661431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134166521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134169521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30725 + ... + 34818.

It is an arithmetic number, because the mean of its divisors is an integer number (17696880).

Almost surely, 2^134166521 is an apocalyptic number.

It is an amenable number.

134166521 is a deficient number, since it is larger than the sum of its proper divisors (7408519).

134166521 is an equidigital number, since it uses as much as digits as its factorization.

134166521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65655.

The product of its digits is 4320, while the sum is 29.

The square root of 134166521 is about 11583.0272813285. The cubic root of 134166521 is about 511.9348786499.

The spelling of 134166521 in words is "one hundred thirty-four million, one hundred sixty-six thousand, five hundred twenty-one".