52212442420 has 24 divisors (see below), whose sum is σ = 109713838248. Its totient is φ = 20872080000.

The previous prime is 52212442417. The next prime is 52212442433. The reversal of 52212442420 is 2424421225.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13214881936 + 38997560484 = 114956^2 + 197478^2 .

It is a super-2 number, since 2×52212442420² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 772831 + ... + 837670.

It is an arithmetic number, because the mean of its divisors is an integer number (4571409927).

Almost surely, 2^52212442420 is an apocalyptic number.

It is an amenable number.

52212442420 is an abundant number, since it is smaller than the sum of its proper divisors (57501395828).

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

52212442420 is a wasteful number, since it uses less digits than its factorization.

52212442420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612131 (or 1612129 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 28.

Adding to 52212442420 its reverse (2424421225), we get a palindrome (54636863645).

The spelling of 52212442420 in words is "fifty-two billion, two hundred twelve million, four hundred forty-two thousand, four hundred twenty".