126493 has 2 divisors, whose sum is σ = 126494. Its totient is φ = 126492.

The previous prime is 126491. The next prime is 126499. The reversal of 126493 is 394621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120409 + 6084 = 347^2 + 78^2 .

It is a cyclic number.

It is not a de Polignac number, because 126493 - 2¹ = 126491 is a prime.

Together with 126491, it forms a pair of twin primes.

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 2¹⁵ + 4⁸ + 6⁵ + 9³ + 3⁹ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126491) 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 as a sum of consecutive naturals, namely, 63246 + 63247.

It is an arithmetic number, because the mean of its divisors is an integer number (63247).

2¹²⁶⁴⁹³ is an apocalyptic number.

It is an amenable number.

126493 is a deficient number, since it is larger than the sum of its proper divisors (1).

126493 is an equidigital number, since it uses as much as digits as its factorization.

126493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 25.

The square root of 126493 is about 355.6585441122. The cubic root of 126493 is about 50.1982793334.

The spelling of 126493 in words is "one hundred twenty-six thousand, four hundred ninety-three".