494573121 has 45 divisors (see below), whose sum is σ = 861869811. Its totient is φ = 281812608.

The previous prime is 494573099. The next prime is 494573147. The reversal of 494573121 is 121375494.

The square root of 494573121 is 22239.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 200930625 + 293642496 = 14175^2 + 17136^2 .

It is not a de Polignac number, because 494573121 - 2¹⁷ = 494442049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (494573171) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1400881 + ... + 1401233.

Almost surely, 2^494573121 is an apocalyptic number.

494573121 is the 22239-th square number.

494573121 is the 11120-th centered octagonal number.

It is an amenable number.

494573121 is a deficient number, since it is larger than the sum of its proper divisors (367296690).

494573121 is an frugal number, since it uses more digits than its factorization.

494573121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732 (or 363 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The cubic root of 494573121 is about 790.8185293887.

Multiplying 494573121 by its sum of digits (36), we get a square (17804632356 = 133434²).

The spelling of 494573121 in words is "four hundred ninety-four million, five hundred seventy-three thousand, one hundred twenty-one".