516842 has 4 divisors (see below), whose sum is σ = 775266. Its totient is φ = 258420.

The previous prime is 516839. The next prime is 516847. The reversal of 516842 is 248615.

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

It can be written as a sum of positive squares in only one way, i.e., 502681 + 14161 = 709^2 + 119^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 516842.

It is not an unprimeable number, because it can be changed into a prime (516847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129209 + ... + 129212.

2⁵¹⁶⁸⁴² is an apocalyptic number.

516842 is a deficient number, since it is larger than the sum of its proper divisors (258424).

516842 is a wasteful number, since it uses less digits than its factorization.

516842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258423.

The product of its digits is 1920, while the sum is 26.

The square root of 516842 is about 718.9172414124. The cubic root of 516842 is about 80.2513966689.

The spelling of 516842 in words is "five hundred sixteen thousand, eight hundred forty-two".