494102721 has 24 divisors (see below), whose sum is σ = 799689024. Its totient is φ = 270066720.

The previous prime is 494102717. The next prime is 494102747. The reversal of 494102721 is 127201494.

It is not a de Polignac number, because 494102721 - 2² = 494102717 is a prime.

It is not an unprimeable number, because it can be changed into a prime (494102701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69690 + ... + 76451.

It is an arithmetic number, because the mean of its divisors is an integer number (33320376).

Almost surely, 2^494102721 is an apocalyptic number.

It is an amenable number.

494102721 is a deficient number, since it is larger than the sum of its proper divisors (305586303).

494102721 is a wasteful number, since it uses less digits than its factorization.

494102721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146181 (or 146174 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 494102721 is about 22228.4214689213. The cubic root of 494102721 is about 790.5677278911.

The spelling of 494102721 in words is "four hundred ninety-four million, one hundred two thousand, seven hundred twenty-one".