512942 has 4 divisors (see below), whose sum is σ = 769416. Its totient is φ = 256470.

The previous prime is 512929. The next prime is 512959. The reversal of 512942 is 249215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 249215 = 5 ⋅49843.

It is a congruent number.

It is an unprimeable number.

512942 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 (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128234 + ... + 128237.

It is an arithmetic number, because the mean of its divisors is an integer number (192354).

2⁵¹²⁹⁴² is an apocalyptic number.

512942 is a deficient number, since it is larger than the sum of its proper divisors (256474).

512942 is a wasteful number, since it uses less digits than its factorization.

512942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256473.

The product of its digits is 720, while the sum is 23.

The square root of 512942 is about 716.1996928232. The cubic root of 512942 is about 80.0490324416.

The spelling of 512942 in words is "five hundred twelve thousand, nine hundred forty-two".