515042 has 16 divisors (see below), whose sum is σ = 864864. Its totient is φ = 228000.

The previous prime is 515041. The next prime is 515087. The reversal of 515042 is 240515.

It is a self number, because there is not a number n which added to its sum of digits gives 515042.

It is not an unprimeable number, because it can be changed into a prime (515041) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 617 + ... + 1187.

It is an arithmetic number, because the mean of its divisors is an integer number (54054).

2⁵¹⁵⁰⁴² is an apocalyptic number.

515042 is a deficient number, since it is larger than the sum of its proper divisors (349822).

515042 is a wasteful number, since it uses less digits than its factorization.

515042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 515042 is about 717.6642669104. The cubic root of 515042 is about 80.1581247511.

Adding to 515042 its reverse (240515), we get a palindrome (755557).

The spelling of 515042 in words is "five hundred fifteen thousand, forty-two".