42612540 has 48 divisors (see below), whose sum is σ = 126336672. Its totient is φ = 10694656.

The previous prime is 42612533. The next prime is 42612541. The reversal of 42612540 is 4521624.

42612540 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 42612540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42612541) 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, 19869 + ... + 21908.

It is an arithmetic number, because the mean of its divisors is an integer number (2632014).

Almost surely, 2^42612540 is an apocalyptic number.

It is an amenable number.

42612540 is an abundant number, since it is smaller than the sum of its proper divisors (83724132).

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

42612540 is a wasteful number, since it uses less digits than its factorization.

42612540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41806 (or 41804 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 42612540 is about 6527.8281227373. The cubic root of 42612540 is about 349.2843608712.

The spelling of 42612540 in words is "forty-two million, six hundred twelve thousand, five hundred forty".