126319 has 4 divisors (see below), whose sum is σ = 128520. Its totient is φ = 124120.

The previous prime is 126317. The next prime is 126323. The reversal of 126319 is 913621.

126319 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 913621 = 43 ⋅21247.

It is a cyclic number.

It is not a de Polignac number, because 126319 - 2¹ = 126317 is a prime.

It is a super-2 number, since 2×126319² = 31912979522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126311) 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, 1012 + ... + 1129.

It is an arithmetic number, because the mean of its divisors is an integer number (32130).

2¹²⁶³¹⁹ is an apocalyptic number.

126319 is a deficient number, since it is larger than the sum of its proper divisors (2201).

126319 is an equidigital number, since it uses as much as digits as its factorization.

126319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200.

The product of its digits is 324, while the sum is 22.

The square root of 126319 is about 355.4138432869. The cubic root of 126319 is about 50.1752516859.

The spelling of 126319 in words is "one hundred twenty-six thousand, three hundred nineteen".