142221001030421 has 16 divisors (see below), whose sum is σ = 146503028848176. Its totient is φ = 137979340800000.

The previous prime is 142221001030391. The next prime is 142221001030453. The reversal of 142221001030421 is 124030100122241.

142221001030421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 270790140625 + 141950210889796 = 520375^2 + 11914286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142221001030421 is a prime.

It is a super-2 number, since 2×142221001030421² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142221001030021) 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, 3339740 + ... + 17192901.

It is an arithmetic number, because the mean of its divisors is an integer number (9156439303011).

Almost surely, 2^{142221001030421} is an apocalyptic number.

It is an amenable number.

142221001030421 is a deficient number, since it is larger than the sum of its proper divisors (4282027817755).

142221001030421 is a wasteful number, since it uses less digits than its factorization.

142221001030421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20533624.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 142221001030421 its reverse (124030100122241), we get a palindrome (266251101152662).

The spelling of 142221001030421 in words is "one hundred forty-two trillion, two hundred twenty-one billion, one million, thirty thousand, four hundred twenty-one".