126347 has 4 divisors (see below), whose sum is σ = 136080. Its totient is φ = 116616.

The previous prime is 126341. The next prime is 126349. The reversal of 126347 is 743621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 743621 = 347 ⋅2143.

It is a cyclic number.

It is not a de Polignac number, because 126347 - 2¹² = 122251 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 1 + 2¹³ + 3⁵ + 6 + 4⁴ + 7⁶ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126341) 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 in 3 ways as a sum of consecutive naturals, for example, 4847 + ... + 4872.

It is an arithmetic number, because the mean of its divisors is an integer number (34020).

2¹²⁶³⁴⁷ is an apocalyptic number.

126347 is a deficient number, since it is larger than the sum of its proper divisors (9733).

126347 is an equidigital number, since it uses as much as digits as its factorization.

126347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9732.

The product of its digits is 1008, while the sum is 23.

The square root of 126347 is about 355.4532318041. The cubic root of 126347 is about 50.1789587114.

Adding to 126347 its reverse (743621), we get a palindrome (869968).

The spelling of 126347 in words is "one hundred twenty-six thousand, three hundred forty-seven".