205032042 has 12 divisors (see below), whose sum is σ = 444236130. Its totient is φ = 68344008.

The previous prime is 205032031. The next prime is 205032049. The reversal of 205032042 is 240230502.

It can be written as a sum of positive squares in only one way, i.e., 158533281 + 46498761 = 12591^2 + 6819^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11390669 = 205032042 / (2 + 0 + 5 + 0 + 3 + 2 + 0 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (205032049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5695317 + ... + 5695352.

Almost surely, 2^205032042 is an apocalyptic number.

205032042 is an abundant number, since it is smaller than the sum of its proper divisors (239204088).

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

205032042 is a wasteful number, since it uses less digits than its factorization.

205032042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11390677 (or 11390674 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 205032042 is about 14318.9399747328. The cubic root of 205032042 is about 589.6675729561.

Adding to 205032042 its reverse (240230502), we get a palindrome (445262544).

The spelling of 205032042 in words is "two hundred five million, thirty-two thousand, forty-two".