11726531242 has 16 divisors (see below), whose sum is σ = 17818849800. Its totient is φ = 5787147520.

The previous prime is 11726531239. The next prime is 11726531251. The reversal of 11726531242 is 24213562711.

It can be written as a sum of positive squares in 4 ways, for example, as 8608313961 + 3118217281 = 92781^2 + 55841^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11726531198 and 11726531207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43392 + ... + 159172.

Almost surely, 2^11726531242 is an apocalyptic number.

11726531242 is a deficient number, since it is larger than the sum of its proper divisors (6092318558).

11726531242 is a wasteful number, since it uses less digits than its factorization.

11726531242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116441.

The product of its digits is 20160, while the sum is 34.

The spelling of 11726531242 in words is "eleven billion, seven hundred twenty-six million, five hundred thirty-one thousand, two hundred forty-two".