513842 has 24 divisors (see below), whose sum is σ = 943104. Its totient is φ = 205632.

The previous prime is 513841. The next prime is 513871. The reversal of 513842 is 248315.

It is not an unprimeable number, because it can be changed into a prime (513841) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3983 + ... + 4109.

It is an arithmetic number, because the mean of its divisors is an integer number (39296).

2⁵¹³⁸⁴² is an apocalyptic number.

513842 is a deficient number, since it is larger than the sum of its proper divisors (429262).

513842 is a wasteful number, since it uses less digits than its factorization.

513842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 153 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 513842 is about 716.8277338385. The cubic root of 513842 is about 80.0958226794.

The spelling of 513842 in words is "five hundred thirteen thousand, eight hundred forty-two".