198920706142 has 16 divisors (see below), whose sum is σ = 314436870432. Its totient is φ = 94194047200.

The previous prime is 198920706133. The next prime is 198920706143. The reversal of 198920706142 is 241607029891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198920706143) 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 7 ways as a sum of consecutive naturals, for example, 21403093 + ... + 21412384.

It is an arithmetic number, because the mean of its divisors is an integer number (19652304402).

Almost surely, 2^198920706142 is an apocalyptic number.

198920706142 is a deficient number, since it is larger than the sum of its proper divisors (115516164290).

198920706142 is a wasteful number, since it uses less digits than its factorization.

198920706142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42815603.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 198920706142 in words is "one hundred ninety-eight billion, nine hundred twenty million, seven hundred six thousand, one hundred forty-two".