126263 has 4 divisors (see below), whose sum is σ = 130368. Its totient is φ = 122160.

The previous prime is 126257. The next prime is 126271. The reversal of 126263 is 362621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 362621 = 7 ⋅51803.

It is a cyclic number.

It is not a de Polignac number, because 126263 - 2⁶ = 126199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2006 + ... + 2067.

It is an arithmetic number, because the mean of its divisors is an integer number (32592).

2¹²⁶²⁶³ is an apocalyptic number.

126263 is a deficient number, since it is larger than the sum of its proper divisors (4105).

126263 is an equidigital number, since it uses as much as digits as its factorization.

126263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104.

The product of its digits is 432, while the sum is 20.

The square root of 126263 is about 355.3350531541. The cubic root of 126263 is about 50.1678359912.

Adding to 126263 its reverse (362621), we get a palindrome (488884).

The spelling of 126263 in words is "one hundred twenty-six thousand, two hundred sixty-three".