524121320 has 32 divisors (see below), whose sum is σ = 1190958120. Its totient is φ = 207571200.

The previous prime is 524121287. The next prime is 524121347. The reversal of 524121320 is 23121425.

It can be written as a sum of positive squares in 4 ways, for example, as 519201796 + 4919524 = 22786^2 + 2218^2 .

It is a super-3 number, since 3×524121320³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 524121292 and 524121301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60827 + ... + 68906.

Almost surely, 2^524121320 is an apocalyptic number.

It is an amenable number.

524121320 is an abundant number, since it is smaller than the sum of its proper divisors (666836800).

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

524121320 is a wasteful number, since it uses less digits than its factorization.

524121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129845 (or 129841 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 524121320 is about 22893.6960755576. The cubic root of 524121320 is about 806.2640121756.

Adding to 524121320 its reverse (23121425), we get a palindrome (547242745).

The spelling of 524121320 in words is "five hundred twenty-four million, one hundred twenty-one thousand, three hundred twenty".