142138664517 has 16 divisors (see below), whose sum is σ = 199755069120. Its totient is φ = 89653795200.

The previous prime is 142138664483. The next prime is 142138664527. The reversal of 142138664517 is 715466831241.

It is not a de Polignac number, because 142138664517 - 2⁷ = 142138664389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142138664527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1595034 + ... + 1681787.

It is an arithmetic number, because the mean of its divisors is an integer number (12484691820).

Almost surely, 2^142138664517 is an apocalyptic number.

It is an amenable number.

142138664517 is a deficient number, since it is larger than the sum of its proper divisors (57616404603).

142138664517 is a wasteful number, since it uses less digits than its factorization.

142138664517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277604.

The product of its digits is 967680, while the sum is 48.

The spelling of 142138664517 in words is "one hundred forty-two billion, one hundred thirty-eight million, six hundred sixty-four thousand, five hundred seventeen".