199835742 has 16 divisors (see below), whose sum is σ = 410473872. Its totient is φ = 64811520.

The previous prime is 199835737. The next prime is 199835743. The reversal of 199835742 is 247538991.

199835742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 199835691 and 199835700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199835743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449859 + ... + 450302.

It is an arithmetic number, because the mean of its divisors is an integer number (25654617).

Almost surely, 2^199835742 is an apocalyptic number.

199835742 is an abundant number, since it is smaller than the sum of its proper divisors (210638130).

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

199835742 is a wasteful number, since it uses less digits than its factorization.

199835742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900203.

The product of its digits is 544320, while the sum is 48.

The square root of 199835742 is about 14136.3270335685. The cubic root of 199835742 is about 584.6434060251.

The spelling of 199835742 in words is "one hundred ninety-nine million, eight hundred thirty-five thousand, seven hundred forty-two".