126540635 has 8 divisors (see below), whose sum is σ = 163529520. Its totient is φ = 93445344.

The previous prime is 126540599. The next prime is 126540647. The reversal of 126540635 is 536045621.

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

It is a cyclic number.

It is not a de Polignac number, because 126540635 - 2¹² = 126536539 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 973325 + ... + 973454.

It is an arithmetic number, because the mean of its divisors is an integer number (20441190).

Almost surely, 2^126540635 is an apocalyptic number.

126540635 is a deficient number, since it is larger than the sum of its proper divisors (36988885).

126540635 is a wasteful number, since it uses less digits than its factorization.

126540635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946797.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 126540635 is about 11249.0281802474. The cubic root of 126540635 is about 502.0457980047.

The spelling of 126540635 in words is "one hundred twenty-six million, five hundred forty thousand, six hundred thirty-five".