142001268647 has 8 divisors (see below), whose sum is σ = 162289478016. Its totient is φ = 121713637752.

The previous prime is 142001268593. The next prime is 142001268649. The reversal of 142001268647 is 746862100241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142001268647 - 2³⁴ = 124821399463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142001268649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752108 + ... + 921774.

It is an arithmetic number, because the mean of its divisors is an integer number (20286184752).

Almost surely, 2^142001268647 is an apocalyptic number.

142001268647 is a deficient number, since it is larger than the sum of its proper divisors (20288209369).

142001268647 is a wasteful number, since it uses less digits than its factorization.

142001268647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289237.

The product of its (nonzero) digits is 129024, while the sum is 41.

Adding to 142001268647 its reverse (746862100241), we get a palindrome (888863368888).

The spelling of 142001268647 in words is "one hundred forty-two billion, one million, two hundred sixty-eight thousand, six hundred forty-seven".