142512003343521 has 24 divisors (see below), whose sum is σ = 235258345484864. Its totient is φ = 81435279834720.

The previous prime is 142512003343477. The next prime is 142512003343529. The reversal of 142512003343521 is 125343300215241.

142512003343521 is a `hidden beast` number, since 1 + 4 + 2 + 5 + 120 + 0 + 3 + 3 + 4 + 3 + 521 = 666.

It is not a de Polignac number, because 142512003343521 - 2¹¹ = 142512003341473 is a prime.

It is a super-3 number, since 3×142512003343521³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142512003343529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38406135 + ... + 41953011.

Almost surely, 2^{142512003343521} is an apocalyptic number.

It is an amenable number.

142512003343521 is a deficient number, since it is larger than the sum of its proper divisors (92746342141343).

142512003343521 is a wasteful number, since it uses less digits than its factorization.

142512003343521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4184661 (or 4184658 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

Adding to 142512003343521 its reverse (125343300215241), we get a palindrome (267855303558762).

The spelling of 142512003343521 in words is "one hundred forty-two trillion, five hundred twelve billion, three million, three hundred forty-three thousand, five hundred twenty-one".