205242626 has 8 divisors (see below), whose sum is σ = 316184700. Its totient is φ = 99847728.

The previous prime is 205242623. The next prime is 205242629. The reversal of 205242626 is 626242502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (205242623) and next prime (205242629).

It can be written as a sum of positive squares in 2 ways, for example, as 197430601 + 7812025 = 14051^2 + 2795^2 .

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

It is not an unprimeable number, because it can be changed into a prime (205242623) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1386701 + ... + 1386848.

Almost surely, 2^205242626 is an apocalyptic number.

205242626 is a deficient number, since it is larger than the sum of its proper divisors (110942074).

205242626 is a wasteful number, since it uses less digits than its factorization.

205242626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2773588.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 205242626 is about 14326.2914252084. The cubic root of 205242626 is about 589.8693821739.

The spelling of 205242626 in words is "two hundred five million, two hundred forty-two thousand, six hundred twenty-six".