42012524 has 24 divisors (see below), whose sum is σ = 74770080. Its totient is φ = 20653056.

The previous prime is 42012521. The next prime is 42012541. The reversal of 42012524 is 42521024.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42012496 and 42012505.

It is not an unprimeable number, because it can be changed into a prime (42012521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72524 + ... + 73100.

It is an arithmetic number, because the mean of its divisors is an integer number (3115420).

Almost surely, 2^42012524 is an apocalyptic number.

It is an amenable number.

42012524 is a deficient number, since it is larger than the sum of its proper divisors (32757556).

42012524 is a wasteful number, since it uses less digits than its factorization.

42012524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857 (or 855 counting only the distinct ones).

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

The square root of 42012524 is about 6481.7068739646. The cubic root of 42012524 is about 347.6372116563.

Adding to 42012524 its reverse (42521024), we get a palindrome (84533548).

The spelling of 42012524 in words is "forty-two million, twelve thousand, five hundred twenty-four".