205222142 has 8 divisors (see below), whose sum is σ = 308006832. Its totient is φ = 102553200.

The previous prime is 205222141. The next prime is 205222153. The reversal of 205222142 is 241222502.

205222142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×205222142² = 84232255134136328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205222141) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 24359 + ... + 31682.

It is an arithmetic number, because the mean of its divisors is an integer number (38500854).

Almost surely, 2^205222142 is an apocalyptic number.

205222142 is a deficient number, since it is larger than the sum of its proper divisors (102784690).

205222142 is a wasteful number, since it uses less digits than its factorization.

205222142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57874.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 205222142 is about 14325.5764979983. The cubic root of 205222142 is about 589.8497577800.

Adding to 205222142 its reverse (241222502), we get a palindrome (446444644).

The spelling of 205222142 in words is "two hundred five million, two hundred twenty-two thousand, one hundred forty-two".