126443231 has 2 divisors, whose sum is σ = 126443232. Its totient is φ = 126443230.

The previous prime is 126443197. The next prime is 126443243. The reversal of 126443231 is 132344621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126443231 - 2¹⁴ = 126426847 is a prime.

It is a super-2 number, since 2×126443231² = 31975781331438722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126443231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126443281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63221615 + 63221616.

It is an arithmetic number, because the mean of its divisors is an integer number (63221616).

Almost surely, 2^126443231 is an apocalyptic number.

126443231 is a deficient number, since it is larger than the sum of its proper divisors (1).

126443231 is an equidigital number, since it uses as much as digits as its factorization.

126443231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

The square root of 126443231 is about 11244.6979061245. The cubic root of 126443231 is about 501.9169492191.

Adding to 126443231 its reverse (132344621), we get a palindrome (258787852).

The spelling of 126443231 in words is "one hundred twenty-six million, four hundred forty-three thousand, two hundred thirty-one".