205402027 has 4 divisors (see below), whose sum is σ = 216212680. Its totient is φ = 194591376.

The previous prime is 205402019. The next prime is 205402031. The reversal of 205402027 is 720204502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205402027 - 2³ = 205402019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205401989 and 205402007.

It is not an unprimeable number, because it can be changed into a prime (205402037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5405298 + ... + 5405335.

It is an arithmetic number, because the mean of its divisors is an integer number (54053170).

Almost surely, 2^205402027 is an apocalyptic number.

205402027 is a deficient number, since it is larger than the sum of its proper divisors (10810653).

205402027 is a wasteful number, since it uses less digits than its factorization.

205402027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10810652.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 205402027 is about 14331.8535786548. The cubic root of 205402027 is about 590.0220493531.

Adding to 205402027 its reverse (720204502), we get a palindrome (925606529).

The spelling of 205402027 in words is "two hundred five million, four hundred two thousand, twenty-seven".