219730242 has 16 divisors (see below), whose sum is σ = 439852320. Its totient is φ = 73178112.

The previous prime is 219730223. The next prime is 219730249. The reversal of 219730242 is 242037912.

It is not an unprimeable number, because it can be changed into a prime (219730249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8767 + ... + 22722.

It is an arithmetic number, because the mean of its divisors is an integer number (27490770).

Almost surely, 2^219730242 is an apocalyptic number.

219730242 is an abundant number, since it is smaller than the sum of its proper divisors (220122078).

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

219730242 is a wasteful number, since it uses less digits than its factorization.

219730242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32657.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 219730242 is about 14823.3006445933. The cubic root of 219730242 is about 603.4342336733.

The spelling of 219730242 in words is "two hundred nineteen million, seven hundred thirty thousand, two hundred forty-two".