205534442 has 4 divisors (see below), whose sum is σ = 308301666. Its totient is φ = 102767220.

The previous prime is 205534409. The next prime is 205534451. The reversal of 205534442 is 244435502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244435502 = 2 ⋅122217751.

It can be written as a sum of positive squares in only one way, i.e., 169546441 + 35988001 = 13021^2 + 5999^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 51383609 + ... + 51383612.

Almost surely, 2^205534442 is an apocalyptic number.

205534442 is a deficient number, since it is larger than the sum of its proper divisors (102767224).

205534442 is a wasteful number, since it uses less digits than its factorization.

205534442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102767223.

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 205534442 is about 14336.4724392021. The cubic root of 205534442 is about 590.1488104959.

Adding to 205534442 its reverse (244435502), we get a palindrome (449969944).

The spelling of 205534442 in words is "two hundred five million, five hundred thirty-four thousand, four hundred forty-two".