505842 has 8 divisors (see below), whose sum is σ = 1011696. Its totient is φ = 168612.

The previous prime is 505823. The next prime is 505867. The reversal of 505842 is 248505.

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

505842 is an admirable number.

It is a super-2 number, since 2×505842² = 511752257928, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 505842.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42148 + ... + 42159.

It is an arithmetic number, because the mean of its divisors is an integer number (126462).

2⁵⁰⁵⁸⁴² is an apocalyptic number.

505842 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.

505842 is a wasteful number, since it uses less digits than its factorization.

505842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84312.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 505842 is about 711.2257025727. The cubic root of 505842 is about 79.6779763320.

The spelling of 505842 in words is "five hundred five thousand, eight hundred forty-two".