173104421 has 16 divisors (see below), whose sum is σ = 220498560. Its totient is φ = 132295680.

The previous prime is 173104391. The next prime is 173104427. The reversal of 173104421 is 124401371.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 173104421 - 2²² = 168910117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (173104427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36020 + ... + 40541.

It is an arithmetic number, because the mean of its divisors is an integer number (13781160).

Almost surely, 2^173104421 is an apocalyptic number.

It is an amenable number.

173104421 is a deficient number, since it is larger than the sum of its proper divisors (47394139).

173104421 is a wasteful number, since it uses less digits than its factorization.

173104421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76604.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 173104421 is about 13156.9153299700. The cubic root of 173104421 is about 557.3175508133.

Adding to 173104421 its reverse (124401371), we get a palindrome (297505792).

The spelling of 173104421 in words is "one hundred seventy-three million, one hundred four thousand, four hundred twenty-one".