494021 has 8 divisors (see below), whose sum is σ = 545664. Its totient is φ = 443520.

The previous prime is 493993. The next prime is 494023. The reversal of 494021 is 120494.

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

It is not a de Polignac number, because 494021 - 2¹⁴ = 477637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 493984 and 494002.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 494021.

It is not an unprimeable number, because it can be changed into a prime (494023) 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, 836 + ... + 1298.

It is an arithmetic number, because the mean of its divisors is an integer number (68208).

2⁴⁹⁴⁰²¹ is an apocalyptic number.

It is an amenable number.

494021 is a deficient number, since it is larger than the sum of its proper divisors (51643).

494021 is a wasteful number, since it uses less digits than its factorization.

494021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 494021 is about 702.8662746213. The cubic root of 494021 is about 79.0524140769.

It can be divided in two parts, 4940 and 21, that multiplied together give a triangular number (103740 = T₄₅₅).

The spelling of 494021 in words is "four hundred ninety-four thousand, twenty-one".