131223040000042 has 16 divisors (see below), whose sum is σ = 197110665852192. Its totient is φ = 65519491595760.

The previous prime is 131223040000033. The next prime is 131223040000049. The reversal of 131223040000042 is 240000040322131.

It is a junction number, because it is equal to n+sod(n) for n = 131223039999968 and 131223040000022.

It is not an unprimeable number, because it can be changed into a prime (131223040000049) 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, 36742317 + ... + 40155247.

It is an arithmetic number, because the mean of its divisors is an integer number (12319416615762).

Almost surely, 2^{131223040000042} is an apocalyptic number.

131223040000042 is a deficient number, since it is larger than the sum of its proper divisors (65887625852150).

131223040000042 is a wasteful number, since it uses less digits than its factorization.

131223040000042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3439893.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 131223040000042 its reverse (240000040322131), we get a palindrome (371223080322173).

The spelling of 131223040000042 in words is "one hundred thirty-one trillion, two hundred twenty-three billion, forty million, forty-two", and thus it is an aban number.