515242 has 32 divisors (see below), whose sum is σ = 1008000. Its totient is φ = 191808.

The previous prime is 515237. The next prime is 515279. The reversal of 515242 is 242515.

515242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3384 + ... + 3532.

It is an arithmetic number, because the mean of its divisors is an integer number (31500).

2⁵¹⁵²⁴² is an apocalyptic number.

515242 is a deficient number, since it is larger than the sum of its proper divisors (492758).

515242 is a wasteful number, since it uses less digits than its factorization.

515242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190.

The product of its digits is 400, while the sum is 19.

The square root of 515242 is about 717.8035943070. The cubic root of 515242 is about 80.1684990185.

Adding to 515242 its reverse (242515), we get a palindrome (757757).

It can be divided in two parts, 515 and 242, that added together give a palindrome (757).

The spelling of 515242 in words is "five hundred fifteen thousand, two hundred forty-two".