131121304512442 has 8 divisors (see below), whose sum is σ = 196683332894100. Its totient is φ = 65560193547744.

The previous prime is 131121304512379. The next prime is 131121304512463. The reversal of 131121304512442 is 244215403121131.

It can be written as a sum of positive squares in 2 ways, for example, as 123409681038081 + 7711623474361 = 11108991^2 + 2776981^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 131121304512398 and 131121304512407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228996817 + ... + 229568692.

Almost surely, 2^{131121304512442} is an apocalyptic number.

131121304512442 is a deficient number, since it is larger than the sum of its proper divisors (65562028381658).

131121304512442 is a wasteful number, since it uses less digits than its factorization.

131121304512442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458708480.

The product of its (nonzero) digits is 23040, while the sum is 34.

Adding to 131121304512442 its reverse (244215403121131), we get a palindrome (375336707633573).

The spelling of 131121304512442 in words is "one hundred thirty-one trillion, one hundred twenty-one billion, three hundred four million, five hundred twelve thousand, four hundred forty-two".