199886742 has 48 divisors (see below), whose sum is σ = 478191168. Its totient is φ = 59837040.

The previous prime is 199886711. The next prime is 199886761. The reversal of 199886742 is 247688991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10353 + ... + 22515.

It is an arithmetic number, because the mean of its divisors is an integer number (9962316).

Almost surely, 2^199886742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199886742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239095584).

199886742 is an abundant number, since it is smaller than the sum of its proper divisors (278304426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199886742 is a wasteful number, since it uses less digits than its factorization.

199886742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12265 (or 12262 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 199886742 is about 14138.1307816840. The cubic root of 199886742 is about 584.6931373315.

The spelling of 199886742 in words is "one hundred ninety-nine million, eight hundred eighty-six thousand, seven hundred forty-two".