505423412 has 24 divisors (see below), whose sum is σ = 953941800. Its totient is φ = 232926336.

The previous prime is 505423403. The next prime is 505423417. The reversal of 505423412 is 214324505.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19044496 + 486378916 = 4364^2 + 22054^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505423417) by changing a digit.

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, 30014 + ... + 43722.

It is an arithmetic number, because the mean of its divisors is an integer number (39747575).

Almost surely, 2^505423412 is an apocalyptic number.

505423412 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

505423412 is a deficient number, since it is larger than the sum of its proper divisors (448518388).

505423412 is a wasteful number, since it uses less digits than its factorization.

505423412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14435 (or 14433 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 505423412 is about 22481.6238737330. The cubic root of 505423412 is about 796.5599222849.

Adding to 505423412 its reverse (214324505), we get a palindrome (719747917).

The spelling of 505423412 in words is "five hundred five million, four hundred twenty-three thousand, four hundred twelve".