42400524 has 12 divisors (see below), whose sum is σ = 98934584. Its totient is φ = 14133504.

The previous prime is 42400513. The next prime is 42400531. The reversal of 42400524 is 42500424.

42400524 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 42400524.

It is an unprimeable number.

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, 1766677 + ... + 1766700.

Almost surely, 2^42400524 is an apocalyptic number.

It is an amenable number.

42400524 is an abundant number, since it is smaller than the sum of its proper divisors (56534060).

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

42400524 is a wasteful number, since it uses less digits than its factorization.

42400524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3533384 (or 3533382 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 42400524 is about 6511.5684746457. The cubic root of 42400524 is about 348.7041167267.

Adding to 42400524 its reverse (42500424), we get a palindrome (84900948).

It can be divided in two parts, 42400 and 524, that added together give a palindrome (42924).

The spelling of 42400524 in words is "forty-two million, four hundred thousand, five hundred twenty-four".