1316142867421 has 2 divisors, whose sum is σ = 1316142867422. Its totient is φ = 1316142867420.

The previous prime is 1316142867419. The next prime is 1316142867433. The reversal of 1316142867421 is 1247682416131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 952304691321 + 363838176100 = 975861^2 + 603190^2 .

It is a cyclic number.

It is not a de Polignac number, because 1316142867421 - 2¹ = 1316142867419 is a prime.

Together with 1316142867419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1316142867521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658071433710 + 658071433711.

It is an arithmetic number, because the mean of its divisors is an integer number (658071433711).

Almost surely, 2^{1316142867421} is an apocalyptic number.

It is an amenable number.

1316142867421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1316142867421 is an equidigital number, since it uses as much as digits as its factorization.

1316142867421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 46.

The spelling of 1316142867421 in words is "one trillion, three hundred sixteen billion, one hundred forty-two million, eight hundred sixty-seven thousand, four hundred twenty-one".