520404122 has 8 divisors (see below), whose sum is σ = 892121376. Its totient is φ = 223030332.

The previous prime is 520404089. The next prime is 520404133. The reversal of 520404122 is 221404025.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 520404094 and 520404103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18585848 + ... + 18585875.

It is an arithmetic number, because the mean of its divisors is an integer number (111515172).

Almost surely, 2^520404122 is an apocalyptic number.

520404122 is a deficient number, since it is larger than the sum of its proper divisors (371717254).

520404122 is a wasteful number, since it uses less digits than its factorization.

520404122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37171732.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 520404122 is about 22812.3677420824. The cubic root of 520404122 is about 804.3534136398.

Adding to 520404122 its reverse (221404025), we get a palindrome (741808147).

The spelling of 520404122 in words is "five hundred twenty million, four hundred four thousand, one hundred twenty-two".