199630542 has 32 divisors (see below), whose sum is σ = 410666112. Its totient is φ = 64666784.

The previous prime is 199630537. The next prime is 199630603. The reversal of 199630542 is 245036991.

It is a self number, because there is not a number n which added to its sum of digits gives 199630542.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31093 + ... + 36959.

It is an arithmetic number, because the mean of its divisors is an integer number (12833316).

Almost surely, 2^199630542 is an apocalyptic number.

199630542 is an abundant number, since it is smaller than the sum of its proper divisors (211035570).

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

199630542 is a wasteful number, since it uses less digits than its factorization.

199630542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6032.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 199630542 is about 14129.0672728245. The cubic root of 199630542 is about 584.4432250962.

The spelling of 199630542 in words is "one hundred ninety-nine million, six hundred thirty thousand, five hundred forty-two".