492321 has 8 divisors (see below), whose sum is σ = 659680. Its totient is φ = 326592.

The previous prime is 492319. The next prime is 492377. The reversal of 492321 is 123294.

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

It is not a de Polignac number, because 492321 - 2¹ = 492319 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (492421) 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, 921 + ... + 1353.

It is an arithmetic number, because the mean of its divisors is an integer number (82460).

2⁴⁹²³²¹ is an apocalyptic number.

It is an amenable number.

492321 is a deficient number, since it is larger than the sum of its proper divisors (167359).

492321 is a wasteful number, since it uses less digits than its factorization.

492321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815.

The product of its digits is 432, while the sum is 21.

The square root of 492321 is about 701.6558985714. The cubic root of 492321 is about 78.9616328143.

The spelling of 492321 in words is "four hundred ninety-two thousand, three hundred twenty-one".