505942 has 4 divisors (see below), whose sum is σ = 758916. Its totient is φ = 252970.

The previous prime is 505927. The next prime is 505949. The reversal of 505942 is 249505.

505942 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505949) by changing a digit.

505942 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 as a sum of consecutive naturals, namely, 126484 + ... + 126487.

It is an arithmetic number, because the mean of its divisors is an integer number (189729).

2⁵⁰⁵⁹⁴² is an apocalyptic number.

505942 is a deficient number, since it is larger than the sum of its proper divisors (252974).

505942 is a wasteful number, since it uses less digits than its factorization.

505942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252973.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 505942 is about 711.2960002699. The cubic root of 505942 is about 79.6832265041.

The spelling of 505942 in words is "five hundred five thousand, nine hundred forty-two".