199994200042 has 32 divisors (see below), whose sum is σ = 369242584704. Its totient is φ = 79113758400.

The previous prime is 199994200039. The next prime is 199994200061. The reversal of 199994200042 is 240002499991.

It is a happy number.

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, 5180692 + ... + 5219152.

It is an arithmetic number, because the mean of its divisors is an integer number (11538830772).

Almost surely, 2^199994200042 is an apocalyptic number.

199994200042 is a deficient number, since it is larger than the sum of its proper divisors (169248384662).

199994200042 is a wasteful number, since it uses less digits than its factorization.

199994200042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67054.

The product of its (nonzero) digits is 419904, while the sum is 49.

The spelling of 199994200042 in words is "one hundred ninety-nine billion, nine hundred ninety-four million, two hundred thousand, forty-two".