52442120 has 16 divisors (see below), whose sum is σ = 117994860. Its totient is φ = 20976832.

The previous prime is 52442119. The next prime is 52442123. The reversal of 52442120 is 2124425.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 49252324 + 3189796 = 7018^2 + 1786^2 .

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 = 52442092 and 52442101.

It is not an unprimeable number, because it can be changed into a prime (52442123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 655487 + ... + 655566.

Almost surely, 2^52442120 is an apocalyptic number.

It is an amenable number.

52442120 is an abundant number, since it is smaller than the sum of its proper divisors (65552740).

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

52442120 is a wasteful number, since it uses less digits than its factorization.

52442120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311064 (or 1311060 counting only the distinct ones).

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

The square root of 52442120 is about 7241.6931721801. The cubic root of 52442120 is about 374.3059637028.

Adding to 52442120 its reverse (2124425), we get a palindrome (54566545).

The spelling of 52442120 in words is "fifty-two million, four hundred forty-two thousand, one hundred twenty".