126306543 has 16 divisors (see below), whose sum is σ = 186048000. Its totient is φ = 75578880.

The previous prime is 126306511. The next prime is 126306559. The reversal of 126306543 is 345603621.

It is not a de Polignac number, because 126306543 - 2⁵ = 126306511 is a prime.

It is a super-2 number, since 2×126306543² = 31906685609221698, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 126306543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126306563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21618 + ... + 26831.

It is an arithmetic number, because the mean of its divisors is an integer number (11628000).

Almost surely, 2^126306543 is an apocalyptic number.

126306543 is a deficient number, since it is larger than the sum of its proper divisors (59741457).

126306543 is a wasteful number, since it uses less digits than its factorization.

126306543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48542.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 126306543 is about 11238.6183759393. The cubic root of 126306543 is about 501.7360228070.

The spelling of 126306543 in words is "one hundred twenty-six million, three hundred six thousand, five hundred forty-three".