142321023141221 has 16 divisors (see below), whose sum is σ = 148459703659008. Its totient is φ = 136279706342400.

The previous prime is 142321023141179. The next prime is 142321023141223. The reversal of 142321023141221 is 122141320123241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142321023141221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142321023141223) 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 15 ways as a sum of consecutive naturals, for example, 8201561 + ... + 18759201.

It is an arithmetic number, because the mean of its divisors is an integer number (9278731478688).

Almost surely, 2^{142321023141221} is an apocalyptic number.

It is an amenable number.

142321023141221 is a deficient number, since it is larger than the sum of its proper divisors (6138680517787).

142321023141221 is a wasteful number, since it uses less digits than its factorization.

142321023141221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10562252.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 142321023141221 its reverse (122141320123241), we get a palindrome (264462343264462).

The spelling of 142321023141221 in words is "one hundred forty-two trillion, three hundred twenty-one billion, twenty-three million, one hundred forty-one thousand, two hundred twenty-one".