492043721 has 8 divisors (see below), whose sum is σ = 530108040. Its totient is φ = 454010112.

The previous prime is 492043693. The next prime is 492043753. The reversal of 492043721 is 127340294.

It can be written as a sum of positive squares in 4 ways, for example, as 89038096 + 403005625 = 9436^2 + 20075^2 .

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 492043721 - 2¹⁰ = 492042697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (492043021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34031 + ... + 46283.

It is an arithmetic number, because the mean of its divisors is an integer number (66263505).

Almost surely, 2^492043721 is an apocalyptic number.

It is an amenable number.

492043721 is a deficient number, since it is larger than the sum of its proper divisors (38064319).

492043721 is a wasteful number, since it uses less digits than its factorization.

492043721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15355.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 492043721 is about 22182.0585383774. The cubic root of 492043721 is about 789.4680609610.

It can be divided in two parts, 49204 and 3721, that added together give a palindrome (52925).

The spelling of 492043721 in words is "four hundred ninety-two million, forty-three thousand, seven hundred twenty-one".