123493 has 2 divisors, whose sum is σ = 123494. Its totient is φ = 123492.
The previous prime is 123491. The next prime is 123499. The reversal of 123493 is 394321.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 91809 + 31684 = 303^2 + 178^2 .
It is a cyclic number.
It is not a de Polignac number, because 123493 - 21 = 123491 is a prime.
Together with 123491, it forms a pair of twin primes.
123493 is a lucky number.
It is a plaindrome in base 15.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (123491) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61746 + 61747.
It is an arithmetic number, because the mean of its divisors is an integer number (61747).
2123493 is an apocalyptic number.
It is an amenable number.
123493 is a deficient number, since it is larger than the sum of its proper divisors (1).
123493 is an equidigital number, since it uses as much as digits as its factorization.
123493 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 648, while the sum is 22.
The square root of 123493 is about 351.4157082431. The cubic root of 123493 is about 49.7982537304.
It can be divided in two parts, 123 and 493, that added together give a palindrome (616).
The spelling of 123493 in words is "one hundred twenty-three thousand, four hundred ninety-three".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.072 sec. • engine limits •