134403221 has 8 divisors (see below), whose sum is σ = 137821824. Its totient is φ = 131008000.

The previous prime is 134403193. The next prime is 134403223. The reversal of 134403221 is 122304431.

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

It is a cyclic number.

It is not a de Polignac number, because 134403221 - 2¹⁰ = 134402197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134403193 and 134403202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134403223) 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, 6101 + ... + 17493.

It is an arithmetic number, because the mean of its divisors is an integer number (17227728).

Almost surely, 2^134403221 is an apocalyptic number.

It is an amenable number.

134403221 is a deficient number, since it is larger than the sum of its proper divisors (3418603).

134403221 is a wasteful number, since it uses less digits than its factorization.

134403221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11691.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 134403221 is about 11593.2403149422. The cubic root of 134403221 is about 512.2357579717.

Adding to 134403221 its reverse (122304431), we get a palindrome (256707652).

It can be divided in two parts, 13440 and 3221, that added together give a palindrome (16661).

The spelling of 134403221 in words is "one hundred thirty-four million, four hundred three thousand, two hundred twenty-one".