205420442010 has 64 divisors (see below), whose sum is σ = 564294297600. Its totient is φ = 46881963072.

The previous prime is 205420441991. The next prime is 205420442023. The reversal of 205420442010 is 10244024502.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 603790 + ... + 880569.

It is an arithmetic number, because the mean of its divisors is an integer number (8817098400).

Almost surely, 2^205420442010 is an apocalyptic number.

205420442010 is an abundant number, since it is smaller than the sum of its proper divisors (358873855590).

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

205420442010 is a wasteful number, since it uses less digits than its factorization.

205420442010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485035.

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 205420442010 its reverse (10244024502), we get a palindrome (215664466512).

The spelling of 205420442010 in words is "two hundred five billion, four hundred twenty million, four hundred forty-two thousand, ten".