205401442 has 8 divisors (see below), whose sum is σ = 308238300. Its totient is φ = 102655344.

The previous prime is 205401433. The next prime is 205401481. The reversal of 205401442 is 244104502.

It is a happy number.

205401442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 199967881 + 5433561 = 14141^2 + 2331^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16717 + ... + 26272.

Almost surely, 2^205401442 is an apocalyptic number.

205401442 is a deficient number, since it is larger than the sum of its proper divisors (102836858).

205401442 is a wasteful number, since it uses less digits than its factorization.

205401442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45380.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 205401442 is about 14331.8331695565. The cubic root of 205401442 is about 590.0214892106.

Adding to 205401442 its reverse (244104502), we get a palindrome (449505944).

The spelling of 205401442 in words is "two hundred five million, four hundred one thousand, four hundred forty-two".