205126042 has 16 divisors (see below), whose sum is σ = 341165664. Its totient is φ = 91710000.

The previous prime is 205126037. The next prime is 205126049. The reversal of 205126042 is 240621502.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (205126049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75084 + ... + 77767.

It is an arithmetic number, because the mean of its divisors is an integer number (21322854).

Almost surely, 2^205126042 is an apocalyptic number.

205126042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

205126042 is a deficient number, since it is larger than the sum of its proper divisors (136039622).

205126042 is a wasteful number, since it uses less digits than its factorization.

205126042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152925.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 205126042 is about 14322.2219644858. The cubic root of 205126042 is about 589.7576731550.

Adding to 205126042 its reverse (240621502), we get a palindrome (445747544).

The spelling of 205126042 in words is "two hundred five million, one hundred twenty-six thousand, forty-two".