515010042 has 32 divisors (see below), whose sum is σ = 1145266560. Its totient is φ = 171550080.

The previous prime is 515009987. The next prime is 515010047. The reversal of 515010042 is 240010515.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 515009997 and 515010024.

It is not an unprimeable number, because it can be changed into a prime (515010047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110083 + ... + 114665.

It is an arithmetic number, because the mean of its divisors is an integer number (35789580).

Almost surely, 2^515010042 is an apocalyptic number.

515010042 is an abundant number, since it is smaller than the sum of its proper divisors (630256518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

515010042 is a wasteful number, since it uses less digits than its factorization.

515010042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6675 (or 6669 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 515010042 is about 22693.8326864371. The cubic root of 515010042 is about 801.5646679809.

Adding to 515010042 its reverse (240010515), we get a palindrome (755020557).

The spelling of 515010042 in words is "five hundred fifteen million, ten thousand, forty-two".