205983442 has 16 divisors (see below), whose sum is σ = 353459520. Its totient is φ = 88192368.

The previous prime is 205983419. The next prime is 205983451. The reversal of 205983442 is 244389502.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8893 + ... + 22159.

It is an arithmetic number, because the mean of its divisors is an integer number (22091220).

Almost surely, 2^205983442 is an apocalyptic number.

205983442 is a deficient number, since it is larger than the sum of its proper divisors (147476078).

205983442 is a wasteful number, since it uses less digits than its factorization.

205983442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14385.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 205983442 is about 14352.1232575532. The cubic root of 205983442 is about 590.5782342226.

The spelling of 205983442 in words is "two hundred five million, nine hundred eighty-three thousand, four hundred forty-two".