517444042 has 32 divisors (see below), whose sum is σ = 826200000. Its totient is φ = 242664576.

The previous prime is 517444027. The next prime is 517444051. The reversal of 517444042 is 240444715.

It is a junction number, because it is equal to n+sod(n) for n = 517443995 and 517444013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303709 + ... + 305407.

It is an arithmetic number, because the mean of its divisors is an integer number (25818750).

Almost surely, 2^517444042 is an apocalyptic number.

517444042 is a deficient number, since it is larger than the sum of its proper divisors (308755958).

517444042 is a wasteful number, since it uses less digits than its factorization.

517444042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878.

The product of its (nonzero) digits is 17920, while the sum is 31.

The square root of 517444042 is about 22747.3963784869. The cubic root of 517444042 is about 802.8254478493.

Adding to 517444042 its reverse (240444715), we get a palindrome (757888757).

The spelling of 517444042 in words is "five hundred seventeen million, four hundred forty-four thousand, forty-two".