142404442311 has 4 divisors (see below), whose sum is σ = 189872589752. Its totient is φ = 94936294872.

The previous prime is 142404442309. The next prime is 142404442361. The reversal of 142404442311 is 113244404241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113244404241 = 3 ⋅37748134747.

It is not a de Polignac number, because 142404442311 - 2¹ = 142404442309 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 (142404442361) 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, 23734073716 + ... + 23734073721.

It is an arithmetic number, because the mean of its divisors is an integer number (47468147438).

Almost surely, 2^142404442311 is an apocalyptic number.

142404442311 is a deficient number, since it is larger than the sum of its proper divisors (47468147441).

142404442311 is an equidigital number, since it uses as much as digits as its factorization.

142404442311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47468147440.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 142404442311 its reverse (113244404241), we get a palindrome (255648846552).

The spelling of 142404442311 in words is "one hundred forty-two billion, four hundred four million, four hundred forty-two thousand, three hundred eleven".