405105002 has 16 divisors (see below), whose sum is σ = 665589960. Its totient is φ = 184063488.

The previous prime is 405104977. The next prime is 405105007. The reversal of 405105002 is 200501504.

It can be written as a sum of positive squares in 4 ways, for example, as 344436481 + 60668521 = 18559^2 + 7789^2 .

It is a super-2 number, since 2×405105002² = 328220125290840008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (405105007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204443 + ... + 206414.

Almost surely, 2^405105002 is an apocalyptic number.

405105002 is a deficient number, since it is larger than the sum of its proper divisors (260484958).

405105002 is a wasteful number, since it uses less digits than its factorization.

405105002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410905.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 405105002 is about 20127.2204240923. The cubic root of 405105002 is about 739.9275568236.

Adding to 405105002 its reverse (200501504), we get a palindrome (605606506).

The spelling of 405105002 in words is "four hundred five million, one hundred five thousand, two".