673144121 has 8 divisors (see below), whose sum is σ = 767567304. Its totient is φ = 584812800.

The previous prime is 673144079. The next prime is 673144123. The reversal of 673144121 is 121441376.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 175854121 + 497290000 = 13261^2 + 22300^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-673144121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (673144123) 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, 1522730 + ... + 1523171.

It is an arithmetic number, because the mean of its divisors is an integer number (95945913).

Almost surely, 2^673144121 is an apocalyptic number.

It is an amenable number.

673144121 is a deficient number, since it is larger than the sum of its proper divisors (94423183).

673144121 is a wasteful number, since it uses less digits than its factorization.

673144121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045931.

The product of its digits is 4032, while the sum is 29.

The square root of 673144121 is about 25945.0211215948. The cubic root of 673144121 is about 876.4006393695.

Adding to 673144121 its reverse (121441376), we get a palindrome (794585497).

The spelling of 673144121 in words is "six hundred seventy-three million, one hundred forty-four thousand, one hundred twenty-one".