142131423344021 has 16 divisors (see below), whose sum is σ = 150710568306480. Its totient is φ = 133576601518080.

The previous prime is 142131423343993. The next prime is 142131423344087. The reversal of 142131423344021 is 120443324131241.

It can be written as a sum of positive squares in 8 ways, for example, as 619819245796 + 141511604098225 = 787286^2 + 11895865^2 .

It is a cyclic number.

It is not a de Polignac number, because 142131423344021 - 2³⁸ = 141856545437077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142131423346021) 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, 93804965 + ... + 95308101.

It is an arithmetic number, because the mean of its divisors is an integer number (9419410519155).

Almost surely, 2^{142131423344021} is an apocalyptic number.

It is an amenable number.

142131423344021 is a deficient number, since it is larger than the sum of its proper divisors (8579144962459).

142131423344021 is a wasteful number, since it uses less digits than its factorization.

142131423344021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511224.

The product of its (nonzero) digits is 55296, while the sum is 35.

Adding to 142131423344021 its reverse (120443324131241), we get a palindrome (262574747475262).

The spelling of 142131423344021 in words is "one hundred forty-two trillion, one hundred thirty-one billion, four hundred twenty-three million, three hundred forty-four thousand, twenty-one".