126533543 has 6 divisors (see below), whose sum is σ = 127784664. Its totient is φ = 125294556.

The previous prime is 126533513. The next prime is 126533549. The reversal of 126533543 is 345335621.

It is not a de Polignac number, because 126533543 - 2⁸ = 126533287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126533549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4646 + ... + 16572.

It is an arithmetic number, because the mean of its divisors is an integer number (21297444).

Almost surely, 2^126533543 is an apocalyptic number.

126533543 is a deficient number, since it is larger than the sum of its proper divisors (1251121).

126533543 is an equidigital number, since it uses as much as digits as its factorization.

126533543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12133 (or 12030 counting only the distinct ones).

The product of its digits is 32400, while the sum is 32.

The square root of 126533543 is about 11248.7129485999. The cubic root of 126533543 is about 502.0364187374.

The spelling of 126533543 in words is "one hundred twenty-six million, five hundred thirty-three thousand, five hundred forty-three".