126343281 has 4 divisors (see below), whose sum is σ = 168457712. Its totient is φ = 84228852.

The previous prime is 126343279. The next prime is 126343297. The reversal of 126343281 is 182343621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 182343621 = 3 ⋅60781207.

It is not a de Polignac number, because 126343281 - 2¹ = 126343279 is a prime.

It is a super-2 number, since 2×126343281² = 31925249307689922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126343211) 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, 21057211 + ... + 21057216.

It is an arithmetic number, because the mean of its divisors is an integer number (42114428).

Almost surely, 2^126343281 is an apocalyptic number.

It is an amenable number.

126343281 is a deficient number, since it is larger than the sum of its proper divisors (42114431).

126343281 is an equidigital number, since it uses as much as digits as its factorization.

126343281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42114430.

The product of its digits is 6912, while the sum is 30.

The square root of 126343281 is about 11240.2527106823. The cubic root of 126343281 is about 501.7846637053.

It can be divided in two parts, 1263 and 43281, that added together give a palindrome (44544).

The spelling of 126343281 in words is "one hundred twenty-six million, three hundred forty-three thousand, two hundred eighty-one".