522142420 has 96 divisors (see below), whose sum is σ = 1233429120. Its totient is φ = 184504320.

The previous prime is 522142417. The next prime is 522142451. The reversal of 522142420 is 24241225.

It is a junction number, because it is equal to n+sod(n) for n = 522142391 and 522142400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 845952 + ... + 846568.

It is an arithmetic number, because the mean of its divisors is an integer number (12848220).

Almost surely, 2^522142420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522142420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (616714560).

522142420 is an abundant number, since it is smaller than the sum of its proper divisors (711286700).

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

522142420 is a wasteful number, since it uses less digits than its factorization.

522142420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 522142420 is about 22850.4358820570. The cubic root of 522142420 is about 805.2480081493.

Adding to 522142420 its reverse (24241225), we get a palindrome (546383645).

The spelling of 522142420 in words is "five hundred twenty-two million, one hundred forty-two thousand, four hundred twenty".