126303 has 4 divisors (see below), whose sum is σ = 168408. Its totient is φ = 84200.

The previous prime is 126271. The next prime is 126307. The reversal of 126303 is 303621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 303621 = 3 ⋅101207.

It is a cyclic number.

It is not a de Polignac number, because 126303 - 2⁵ = 126271 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21048 + ... + 21053.

It is an arithmetic number, because the mean of its divisors is an integer number (42102).

2¹²⁶³⁰³ is an apocalyptic number.

126303 is a deficient number, since it is larger than the sum of its proper divisors (42105).

126303 is an equidigital number, since it uses as much as digits as its factorization.

126303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42104.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 126303 is about 355.3913336028. The cubic root of 126303 is about 50.1731331397.

Adding to 126303 its reverse (303621), we get a palindrome (429924).

The spelling of 126303 in words is "one hundred twenty-six thousand, three hundred three".