134004221 has 16 divisors (see below), whose sum is σ = 147666624. Its totient is φ = 120852864.

The previous prime is 134004209. The next prime is 134004253. The reversal of 134004221 is 122400431.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134004221 is a prime.

It is a Duffinian number.

134004221 is a modest number, since divided by 4221 gives 134 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 134004221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134004271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118766 + ... + 119888.

It is an arithmetic number, because the mean of its divisors is an integer number (9229164).

Almost surely, 2^134004221 is an apocalyptic number.

It is an amenable number.

134004221 is a deficient number, since it is larger than the sum of its proper divisors (13662403).

134004221 is a wasteful number, since it uses less digits than its factorization.

134004221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 134004221 is about 11576.0192207857. The cubic root of 134004221 is about 511.7283677262.

Adding to 134004221 its reverse (122400431), we get a palindrome (256404652).

The spelling of 134004221 in words is "one hundred thirty-four million, four thousand, two hundred twenty-one".