142978280194 has 32 divisors (see below), whose sum is σ = 220771391616. Its totient is φ = 69419306880.

The previous prime is 142978280171. The next prime is 142978280209. The reversal of 142978280194 is 491082879241.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27298944 + ... + 27304180.

It is an arithmetic number, because the mean of its divisors is an integer number (6899105988).

Almost surely, 2^142978280194 is an apocalyptic number.

142978280194 is a deficient number, since it is larger than the sum of its proper divisors (77793111422).

142978280194 is a wasteful number, since it uses less digits than its factorization.

142978280194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8170.

The product of its (nonzero) digits is 2322432, while the sum is 55.

The spelling of 142978280194 in words is "one hundred forty-two billion, nine hundred seventy-eight million, two hundred eighty thousand, one hundred ninety-four".