126240537011 has 4 divisors (see below), whose sum is σ = 126278461800. Its totient is φ = 126202612224.

The previous prime is 126240536959. The next prime is 126240537013. The reversal of 126240537011 is 110735042621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126240537011 - 2¹⁰ = 126240535987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126240537013) 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, 18957401 + ... + 18964058.

It is an arithmetic number, because the mean of its divisors is an integer number (31569615450).

Almost surely, 2^126240537011 is an apocalyptic number.

126240537011 is a deficient number, since it is larger than the sum of its proper divisors (37924789).

126240537011 is an equidigital number, since it uses as much as digits as its factorization.

126240537011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37924788.

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 126240537011 its reverse (110735042621), we get a palindrome (236975579632).

The spelling of 126240537011 in words is "one hundred twenty-six billion, two hundred forty million, five hundred thirty-seven thousand, eleven".