142130221442421 has 16 divisors (see below), whose sum is σ = 189749586558336. Its totient is φ = 94632183648576.

The previous prime is 142130221442359. The next prime is 142130221442437. The reversal of 142130221442421 is 124244122031241.

It is a happy number.

It is not a de Polignac number, because 142130221442421 - 2¹⁷ = 142130221311349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142130221442441) 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, 36187251 + ... + 39922143.

It is an arithmetic number, because the mean of its divisors is an integer number (11859349159896).

Almost surely, 2^{142130221442421} is an apocalyptic number.

It is an amenable number.

142130221442421 is a deficient number, since it is larger than the sum of its proper divisors (47619365115915).

142130221442421 is a wasteful number, since it uses less digits than its factorization.

142130221442421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3751132.

The product of its (nonzero) digits is 24576, while the sum is 33.

Adding to 142130221442421 its reverse (124244122031241), we get a palindrome (266374343473662).

The spelling of 142130221442421 in words is "one hundred forty-two trillion, one hundred thirty billion, two hundred twenty-one million, four hundred forty-two thousand, four hundred twenty-one".