142426412135521 has 16 divisors (see below), whose sum is σ = 144483288364800. Its totient is φ = 140375931696000.

The previous prime is 142426412135467. The next prime is 142426412135597. The reversal of 142426412135521 is 125531214624241.

It is a cyclic number.

It is not a de Polignac number, because 142426412135521 - 2¹⁵ = 142426412102753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142426412135621) 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, 507457695 + ... + 507738283.

It is an arithmetic number, because the mean of its divisors is an integer number (9030205522800).

Almost surely, 2^{142426412135521} is an apocalyptic number.

It is an amenable number.

142426412135521 is a deficient number, since it is larger than the sum of its proper divisors (2056876229279).

142426412135521 is a wasteful number, since it uses less digits than its factorization.

142426412135521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291960.

The product of its digits is 460800, while the sum is 43.

Adding to 142426412135521 its reverse (125531214624241), we get a palindrome (267957626759762).

The spelling of 142426412135521 in words is "one hundred forty-two trillion, four hundred twenty-six billion, four hundred twelve million, one hundred thirty-five thousand, five hundred twenty-one".