142001278587 has 12 divisors (see below), whose sum is σ = 234414809200. Its totient is φ = 81143587728.

The previous prime is 142001278567. The next prime is 142001278589. The reversal of 142001278587 is 785872100241.

142001278587 is a `hidden beast` number, since 1 + 42 + 0 + 0 + 1 + 27 + 8 + 587 = 666.

It is not a de Polignac number, because 142001278587 - 2²⁴ = 141984501371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142001278589) 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 11 ways as a sum of consecutive naturals, for example, 1126994212 + ... + 1126994337.

Almost surely, 2^142001278587 is an apocalyptic number.

142001278587 is a deficient number, since it is larger than the sum of its proper divisors (92413530613).

142001278587 is a wasteful number, since it uses less digits than its factorization.

142001278587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253988562 (or 2253988559 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The spelling of 142001278587 in words is "one hundred forty-two billion, one million, two hundred seventy-eight thousand, five hundred eighty-seven".