199425402 has 160 divisors (see below), whose sum is σ = 536310720. Its totient is φ = 54673920.

The previous prime is 199425383. The next prime is 199425403. The reversal of 199425402 is 204524991.

199425402 is a `hidden beast` number, since 199 + 425 + 40 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199425403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 878413 + ... + 878639.

It is an arithmetic number, because the mean of its divisors is an integer number (3351942).

Almost surely, 2^199425402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199425402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268155360).

199425402 is an abundant number, since it is smaller than the sum of its proper divisors (336885318).

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

199425402 is a wasteful number, since it uses less digits than its factorization.

199425402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 199425402 is about 14121.8059043452. The cubic root of 199425402 is about 584.2429655356.

The spelling of 199425402 in words is "one hundred ninety-nine million, four hundred twenty-five thousand, four hundred two".