497421 has 24 divisors (see below), whose sum is σ = 786240. Its totient is φ = 313632.

The previous prime is 497417. The next prime is 497423. The reversal of 497421 is 124794.

It is a happy number.

It is not a de Polignac number, because 497421 - 2² = 497417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5545 + ... + 5633.

It is an arithmetic number, because the mean of its divisors is an integer number (32760).

2⁴⁹⁷⁴²¹ is an apocalyptic number.

It is an amenable number.

497421 is a deficient number, since it is larger than the sum of its proper divisors (288819).

497421 is an equidigital number, since it uses as much as digits as its factorization.

497421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 115 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 497421 is about 705.2807951447. The cubic root of 497421 is about 79.2333537203.

The spelling of 497421 in words is "four hundred ninety-seven thousand, four hundred twenty-one".