1321402142142 has 12 divisors (see below), whose sum is σ = 2863037974680. Its totient is φ = 440467380708.

The previous prime is 1321402142129. The next prime is 1321402142149. The reversal of 1321402142142 is 2412412041231.

1321402142142 is a `hidden beast` number, since 1 + 3 + 214 + 0 + 21 + 421 + 4 + 2 = 666.

It is a super-2 number, since 2×1321402142142² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321402142149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36705615042 + ... + 36705615077.

It is an arithmetic number, because the mean of its divisors is an integer number (238586497890).

Almost surely, 2^{1321402142142} is an apocalyptic number.

1321402142142 is an abundant number, since it is smaller than the sum of its proper divisors (1541635832538).

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

1321402142142 is a wasteful number, since it uses less digits than its factorization.

1321402142142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73411230127 (or 73411230124 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 1321402142142 its reverse (2412412041231), we get a palindrome (3733814183373).

The spelling of 1321402142142 in words is "one trillion, three hundred twenty-one billion, four hundred two million, one hundred forty-two thousand, one hundred forty-two".