142354544353221 has 4 divisors (see below), whose sum is σ = 189806059137632. Its totient is φ = 94903029568812.

The previous prime is 142354544353171. The next prime is 142354544353243. The reversal of 142354544353221 is 122353445453241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 142354544353221 - 2¹³ = 142354544345029 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 (142354544353321) 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 3 ways as a sum of consecutive naturals, for example, 23725757392201 + ... + 23725757392206.

It is an arithmetic number, because the mean of its divisors is an integer number (47451514784408).

Almost surely, 2^{142354544353221} is an apocalyptic number.

It is an amenable number.

142354544353221 is a deficient number, since it is larger than the sum of its proper divisors (47451514784411).

142354544353221 is an equidigital number, since it uses as much as digits as its factorization.

142354544353221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47451514784410.

The product of its digits is 6912000, while the sum is 48.

The spelling of 142354544353221 in words is "one hundred forty-two trillion, three hundred fifty-four billion, five hundred forty-four million, three hundred fifty-three thousand, two hundred twenty-one".