142243421433 has 4 divisors (see below), whose sum is σ = 189657895248. Its totient is φ = 94828947620.

The previous prime is 142243421431. The next prime is 142243421461. The reversal of 142243421433 is 334124342241.

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 142243421433 - 2¹ = 142243421431 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142243421394 and 142243421403.

It is not an unprimeable number, because it can be changed into a prime (142243421431) 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, 23707236903 + ... + 23707236908.

It is an arithmetic number, because the mean of its divisors is an integer number (47414473812).

Almost surely, 2^142243421433 is an apocalyptic number.

It is an amenable number.

142243421433 is a deficient number, since it is larger than the sum of its proper divisors (47414473815).

142243421433 is an equidigital number, since it uses as much as digits as its factorization.

142243421433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47414473814.

The product of its digits is 55296, while the sum is 33.

Adding to 142243421433 its reverse (334124342241), we get a palindrome (476367763674).

The spelling of 142243421433 in words is "one hundred forty-two billion, two hundred forty-three million, four hundred twenty-one thousand, four hundred thirty-three".