126687543 has 8 divisors (see below), whose sum is σ = 172104048. Its totient is φ = 82864704.

The previous prime is 126687523. The next prime is 126687551. The reversal of 126687543 is 345786621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126687543 - 2⁶ = 126687479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 126687495 and 126687504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126687523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 398230 + ... + 398547.

It is an arithmetic number, because the mean of its divisors is an integer number (21513006).

Almost surely, 2^126687543 is an apocalyptic number.

126687543 is a deficient number, since it is larger than the sum of its proper divisors (45416505).

126687543 is an equidigital number, since it uses as much as digits as its factorization.

126687543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796833.

The product of its digits is 241920, while the sum is 42.

The square root of 126687543 is about 11255.5560946583. The cubic root of 126687543 is about 502.2400070838.

The spelling of 126687543 in words is "one hundred twenty-six million, six hundred eighty-seven thousand, five hundred forty-three".