42252540 has 48 divisors (see below), whose sum is σ = 129064320. Its totient is φ = 10242880.

The previous prime is 42252499. The next prime is 42252547. The reversal of 42252540 is 4525224.

It is a happy number.

42252540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 42252540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42252547) 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 15 ways as a sum of consecutive naturals, for example, 31350 + ... + 32669.

It is an arithmetic number, because the mean of its divisors is an integer number (2688840).

Almost surely, 2^42252540 is an apocalyptic number.

It is an amenable number.

42252540 is an abundant number, since it is smaller than the sum of its proper divisors (86811780).

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

42252540 is a wasteful number, since it uses less digits than its factorization.

42252540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64042 (or 64040 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 42252540 is about 6500.1953816789. The cubic root of 42252540 is about 348.2979678133.

Adding to 42252540 its reverse (4525224), we get a palindrome (46777764).

The spelling of 42252540 in words is "forty-two million, two hundred fifty-two thousand, five hundred forty".