199499742 has 24 divisors (see below), whose sum is σ = 465499944. Its totient is φ = 61384464.

The previous prime is 199499717. The next prime is 199499759. The reversal of 199499742 is 247994991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 426048 + ... + 426515.

It is an arithmetic number, because the mean of its divisors is an integer number (19395831).

Almost surely, 2^199499742 is an apocalyptic number.

199499742 is an abundant number, since it is smaller than the sum of its proper divisors (266000202).

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

199499742 is a wasteful number, since it uses less digits than its factorization.

199499742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852584 (or 852581 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 199499742 is about 14124.4377587216. The cubic root of 199499742 is about 584.3155527887.

The spelling of 199499742 in words is "one hundred ninety-nine million, four hundred ninety-nine thousand, seven hundred forty-two".