52242040 has 16 divisors (see below), whose sum is σ = 117544680. Its totient is φ = 20896800.

The previous prime is 52242031. The next prime is 52242041. The reversal of 52242040 is 4024225.

52242040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 52241999 and 52242017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52242041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652986 + ... + 653065.

Almost surely, 2^52242040 is an apocalyptic number.

It is an amenable number.

52242040 is an abundant number, since it is smaller than the sum of its proper divisors (65302640).

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

52242040 is a wasteful number, since it uses less digits than its factorization.

52242040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306062 (or 1306058 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 52242040 is about 7227.8655217152. The cubic root of 52242040 is about 373.8293329430.

Adding to 52242040 its reverse (4024225), we get a palindrome (56266265).

The spelling of 52242040 in words is "fifty-two million, two hundred forty-two thousand, forty".