505434 has 8 divisors (see below), whose sum is σ = 1010880. Its totient is φ = 168476.

The previous prime is 505429. The next prime is 505447. The reversal of 505434 is 434505.

It is a happy number.

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

505434 is an admirable number.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 505434.

It is an unprimeable number.

505434 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42114 + ... + 42125.

It is an arithmetic number, because the mean of its divisors is an integer number (126360).

2⁵⁰⁵⁴³⁴ is an apocalyptic number.

505434 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

505434 is a wasteful number, since it uses less digits than its factorization.

505434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84244.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 505434 is about 710.9388159328. The cubic root of 505434 is about 79.6565484564.

Adding to 505434 its reverse (434505), we get a palindrome (939939).

It can be divided in two parts, 505 and 434, that added together give a palindrome (939).

The spelling of 505434 in words is "five hundred five thousand, four hundred thirty-four".