405410420 has 24 divisors (see below), whose sum is σ = 888378624. Its totient is φ = 155113376.

The previous prime is 405410399. The next prime is 405410461. The reversal of 405410420 is 24014504.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 405410392 and 405410401.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 440204 + ... + 441123.

It is an arithmetic number, because the mean of its divisors is an integer number (37015776).

Almost surely, 2^405410420 is an apocalyptic number.

It is an amenable number.

405410420 is an abundant number, since it is smaller than the sum of its proper divisors (482968204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405410420 is a wasteful number, since it uses less digits than its factorization.

405410420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881359 (or 881357 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 405410420 is about 20134.8061823301. The cubic root of 405410420 is about 740.1134595936.

Adding to 405410420 its reverse (24014504), we get a palindrome (429424924).

The spelling of 405410420 in words is "four hundred five million, four hundred ten thousand, four hundred twenty".