205222542 has 64 divisors (see below), whose sum is σ = 487686144. Its totient is φ = 56337120.

The previous prime is 205222513. The next prime is 205222547. The reversal of 205222542 is 245222502.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205222547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211743 + ... + 212709.

It is an arithmetic number, because the mean of its divisors is an integer number (7620096).

Almost surely, 2^205222542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205222542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243843072).

205222542 is an abundant number, since it is smaller than the sum of its proper divisors (282463602).

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

205222542 is a wasteful number, since it uses less digits than its factorization.

205222542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 205222542 is about 14325.5904590352. The cubic root of 205222542 is about 589.8501410066.

The spelling of 205222542 in words is "two hundred five million, two hundred twenty-two thousand, five hundred forty-two".