199229442 has 16 divisors (see below), whose sum is σ = 399604800. Its totient is φ = 66218832.

The previous prime is 199229441. The next prime is 199229533. The reversal of 199229442 is 244922991.

It is a junction number, because it is equal to n+sod(n) for n = 199229394 and 199229403.

It is not an unprimeable number, because it can be changed into a prime (199229441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45478 + ... + 49665.

It is an arithmetic number, because the mean of its divisors is an integer number (24975300).

Almost surely, 2^199229442 is an apocalyptic number.

199229442 is an abundant number, since it is smaller than the sum of its proper divisors (200375358).

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

199229442 is a wasteful number, since it uses less digits than its factorization.

199229442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95497.

The product of its digits is 93312, while the sum is 42.

The square root of 199229442 is about 14114.8659929877. The cubic root of 199229442 is about 584.0515392839.

The spelling of 199229442 in words is "one hundred ninety-nine million, two hundred twenty-nine thousand, four hundred forty-two".