405241205 has 32 divisors (see below), whose sum is σ = 513492480. Its totient is φ = 306685440.

The previous prime is 405241201. The next prime is 405241211. The reversal of 405241205 is 502142504.

It is a happy number.

It is not a de Polignac number, because 405241205 - 2² = 405241201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405241201) 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 31 ways as a sum of consecutive naturals, for example, 1495220 + ... + 1495490.

It is an arithmetic number, because the mean of its divisors is an integer number (16046640).

Almost surely, 2^405241205 is an apocalyptic number.

It is an amenable number.

405241205 is a deficient number, since it is larger than the sum of its proper divisors (108251275).

405241205 is a wasteful number, since it uses less digits than its factorization.

405241205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 405241205 is about 20130.6036918916. The cubic root of 405241205 is about 740.0104728248.

Adding to 405241205 its reverse (502142504), we get a palindrome (907383709).

The spelling of 405241205 in words is "four hundred five million, two hundred forty-one thousand, two hundred five".