126448643 has 4 divisors (see below), whose sum is σ = 127155240. Its totient is φ = 125742048.

The previous prime is 126448589. The next prime is 126448649. The reversal of 126448643 is 346844621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346844621 = 9161 ⋅37861.

It is a cyclic number.

It is not a de Polignac number, because 126448643 - 2⁶ = 126448579 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126448597 and 126448606.

It is not an unprimeable number, because it can be changed into a prime (126448649) 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, 353030 + ... + 353387.

It is an arithmetic number, because the mean of its divisors is an integer number (31788810).

Almost surely, 2^126448643 is an apocalyptic number.

126448643 is a deficient number, since it is larger than the sum of its proper divisors (706597).

126448643 is an equidigital number, since it uses as much as digits as its factorization.

126448643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706596.

The product of its digits is 110592, while the sum is 38.

The square root of 126448643 is about 11244.9385502990. The cubic root of 126448643 is about 501.9241101027.

The spelling of 126448643 in words is "one hundred twenty-six million, four hundred forty-eight thousand, six hundred forty-three".