142321204140561 has 24 divisors (see below), whose sum is σ = 206431764354816. Its totient is φ = 94485420639360.

The previous prime is 142321204140481. The next prime is 142321204140613. The reversal of 142321204140561 is 165041402123241.

142321204140561 is a `hidden beast` number, since 1 + 4 + 2 + 3 + 2 + 12 + 0 + 41 + 40 + 561 = 666.

It is not a de Polignac number, because 142321204140561 - 2¹³ = 142321204132369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142321204140061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127465036 + ... + 128576738.

It is an arithmetic number, because the mean of its divisors is an integer number (8601323514784).

Almost surely, 2^{142321204140561} is an apocalyptic number.

It is an amenable number.

142321204140561 is a deficient number, since it is larger than the sum of its proper divisors (64110560214255).

142321204140561 is a wasteful number, since it uses less digits than its factorization.

142321204140561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170973 (or 1170970 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 142321204140561 in words is "one hundred forty-two trillion, three hundred twenty-one billion, two hundred four million, one hundred forty thousand, five hundred sixty-one".