142311303555221 has 16 divisors (see below), whose sum is σ = 145839190984704. Its totient is φ = 138804274704384.

The previous prime is 142311303555217. The next prime is 142311303555227. The reversal of 142311303555221 is 122555303113241.

It is a cyclic number.

It is not a de Polignac number, because 142311303555221 - 2² = 142311303555217 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 (142311303555227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602735036 + ... + 602971098.

It is an arithmetic number, because the mean of its divisors is an integer number (9114949436544).

Almost surely, 2^{142311303555221} is an apocalyptic number.

It is an amenable number.

142311303555221 is a deficient number, since it is larger than the sum of its proper divisors (3527887429483).

142311303555221 is a wasteful number, since it uses less digits than its factorization.

142311303555221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280180.

The product of its (nonzero) digits is 108000, while the sum is 38.

Adding to 142311303555221 its reverse (122555303113241), we get a palindrome (264866606668462).

The spelling of 142311303555221 in words is "one hundred forty-two trillion, three hundred eleven billion, three hundred three million, five hundred fifty-five thousand, two hundred twenty-one".