1311420320142 has 16 divisors (see below), whose sum is σ = 2623179557712. Its totient is φ = 437083620480.

The previous prime is 1311420320123. The next prime is 1311420320149. The reversal of 1311420320142 is 2410230241131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311420320149) 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, 14071243 + ... + 14164134.

It is an arithmetic number, because the mean of its divisors is an integer number (163948722357).

Almost surely, 2^{1311420320142} is an apocalyptic number.

1311420320142 is an abundant number, since it is smaller than the sum of its proper divisors (1311759237570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311420320142 is a wasteful number, since it uses less digits than its factorization.

1311420320142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28243123.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1311420320142 its reverse (2410230241131), we get a palindrome (3721650561273).

The spelling of 1311420320142 in words is "one trillion, three hundred eleven billion, four hundred twenty million, three hundred twenty thousand, one hundred forty-two".