1321662142054 has 16 divisors (see below), whose sum is σ = 1993306178880. Its totient is φ = 657235321920.

The previous prime is 1321662142051. The next prime is 1321662142091. The reversal of 1321662142054 is 4502412661231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321662142051) 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 7 ways as a sum of consecutive naturals, for example, 1834389 + ... + 2451184.

It is an arithmetic number, because the mean of its divisors is an integer number (124581636180).

Almost surely, 2^{1321662142054} is an apocalyptic number.

1321662142054 is a deficient number, since it is larger than the sum of its proper divisors (671644036826).

1321662142054 is a wasteful number, since it uses less digits than its factorization.

1321662142054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4286415.

The product of its (nonzero) digits is 69120, while the sum is 37.

It can be divided in two parts, 13216621 and 42054, that added together give a triangular number (13258675 = T₅₁₄₉).

The spelling of 1321662142054 in words is "one trillion, three hundred twenty-one billion, six hundred sixty-two million, one hundred forty-two thousand, fifty-four".