199042506 has 96 divisors (see below), whose sum is σ = 500677632. Its totient is φ = 56643840.

The previous prime is 199042489. The next prime is 199042541. The reversal of 199042506 is 605240991.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 166246 + ... + 167438.

It is an arithmetic number, because the mean of its divisors is an integer number (5215392).

Almost surely, 2^199042506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199042506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250338816).

199042506 is an abundant number, since it is smaller than the sum of its proper divisors (301635126).

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

199042506 is a wasteful number, since it uses less digits than its factorization.

199042506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268 (or 1265 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 199042506 is about 14108.2424844486. The cubic root of 199042506 is about 583.8688112309.

The spelling of 199042506 in words is "one hundred ninety-nine million, forty-two thousand, five hundred six".