493121 has 2 divisors, whose sum is σ = 493122.
Its totient is φ = 493120.
The previous prime is 493111. The next prime is 493123. The reversal of 493121 is 121394.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 409600 + 83521 = 640^2 + 289^2
It is a cyclic number.
It is not a de Polignac number, because 493121 - 214 = 476737 is a prime.
Together with 493123, it forms a pair of twin primes.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 493093 and 493102.
It is not a weakly prime, because it can be changed into another prime (493123) by changing a digit.
It is a good prime.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246560 + 246561.
It is an arithmetic number, because the mean of its divisors is an integer number (246561).
2493121 is an apocalyptic number.
It is an amenable number.
493121 is a deficient number, since it is larger than the sum of its proper divisors (1).
493121 is an equidigital number, since it uses as much as digits as its factorization.
493121 is an evil number, because the sum of its binary digits is even.
The product of its digits is 216, while the sum is 20.
The square root of 493121 is about 702.2257471782.
The cubic root of 493121 is about 79.0043793972.
The spelling of 493121 in words is "four hundred ninety-three thousand, one hundred twenty-one".