199436742 has 20 divisors (see below), whose sum is σ = 446886396. Its totient is φ = 66478860.

The previous prime is 199436729. The next prime is 199436777. The reversal of 199436742 is 247634991.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 615384 + ... + 615707.

Almost surely, 2^199436742 is an apocalyptic number.

199436742 is an abundant number, since it is smaller than the sum of its proper divisors (247449654).

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

199436742 is a wasteful number, since it uses less digits than its factorization.

199436742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231105 (or 1231096 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 199436742 is about 14122.2074053598. The cubic root of 199436742 is about 584.2540393333.

The spelling of 199436742 in words is "one hundred ninety-nine million, four hundred thirty-six thousand, seven hundred forty-two".