131243402444042 has 16 divisors (see below), whose sum is σ = 224989327335552. Its totient is φ = 56247013118160.

The previous prime is 131243402443991. The next prime is 131243402444071. The reversal of 131243402444042 is 240444204342131.

It is a junction number, because it is equal to n+sod(n) for n = 131243402443987 and 131243402444005.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8091998 + ... + 18109865.

It is an arithmetic number, because the mean of its divisors is an integer number (14061832958472).

Almost surely, 2^{131243402444042} is an apocalyptic number.

131243402444042 is a deficient number, since it is larger than the sum of its proper divisors (93745924891510).

131243402444042 is a wasteful number, since it uses less digits than its factorization.

131243402444042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26559653.

The product of its (nonzero) digits is 294912, while the sum is 38.

Adding to 131243402444042 its reverse (240444204342131), we get a palindrome (371687606786173).

The spelling of 131243402444042 in words is "one hundred thirty-one trillion, two hundred forty-three billion, four hundred two million, four hundred forty-four thousand, forty-two".