427740205 has 8 divisors (see below), whose sum is σ = 513407232. Its totient is φ = 342112848.

The previous prime is 427740163. The next prime is 427740241. The reversal of 427740205 is 502047724.

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

It is a cyclic number.

It is not a de Polignac number, because 427740205 - 2⁹ = 427739693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 24972 + ... + 38458.

It is an arithmetic number, because the mean of its divisors is an integer number (64175904).

Almost surely, 2^427740205 is an apocalyptic number.

It is an amenable number.

427740205 is a deficient number, since it is larger than the sum of its proper divisors (85667027).

427740205 is a wasteful number, since it uses less digits than its factorization.

427740205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19835.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 427740205 is about 20681.8810798244. The cubic root of 427740205 is about 753.4596931947.

Adding to 427740205 its reverse (502047724), we get a palindrome (929787929).

The spelling of 427740205 in words is "four hundred twenty-seven million, seven hundred forty thousand, two hundred five".