142879198587 has 24 divisors (see below), whose sum is σ = 199204756800. Its totient is φ = 91085671248.

The previous prime is 142879198577. The next prime is 142879198589. The reversal of 142879198587 is 785891978241.

It is not a de Polignac number, because 142879198587 - 2⁸ = 142879198331 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is not an unprimeable number, because it can be changed into a prime (142879198589) 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 23 ways as a sum of consecutive naturals, for example, 6748464 + ... + 6769602.

It is an arithmetic number, because the mean of its divisors is an integer number (8300198200).

Almost surely, 2^142879198587 is an apocalyptic number.

142879198587 is a deficient number, since it is larger than the sum of its proper divisors (56325558213).

142879198587 is a wasteful number, since it uses less digits than its factorization.

142879198587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25447 (or 25424 counting only the distinct ones).

The product of its digits is 81285120, while the sum is 69.

The spelling of 142879198587 in words is "one hundred forty-two billion, eight hundred seventy-nine million, one hundred ninety-eight thousand, five hundred eighty-seven".