142343201143021 has 4 divisors (see below), whose sum is σ = 142981511462272. Its totient is φ = 141704890823772.

The previous prime is 142343201143009. The next prime is 142343201143027. The reversal of 142343201143021 is 120341102343241.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 142343201143021 - 2²¹ = 142343199045869 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 (142343201143027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319155159291 + ... + 319155159736.

It is an arithmetic number, because the mean of its divisors is an integer number (35745377865568).

Almost surely, 2^{142343201143021} is an apocalyptic number.

It is an amenable number.

142343201143021 is a deficient number, since it is larger than the sum of its proper divisors (638310319251).

142343201143021 is an equidigital number, since it uses as much as digits as its factorization.

142343201143021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638310319250.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 142343201143021 its reverse (120341102343241), we get a palindrome (262684303486262).

The spelling of 142343201143021 in words is "one hundred forty-two trillion, three hundred forty-three billion, two hundred one million, one hundred forty-three thousand, twenty-one".