42540412 has 6 divisors (see below), whose sum is σ = 74445728. Its totient is φ = 21270204.

The previous prime is 42540403. The next prime is 42540413. The reversal of 42540412 is 21404524.

It is a happy number.

42540412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42540413) 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 as a sum of consecutive naturals, namely, 5317548 + ... + 5317555.

Almost surely, 2^42540412 is an apocalyptic number.

It is an amenable number.

42540412 is a deficient number, since it is larger than the sum of its proper divisors (31905316).

42540412 is a wasteful number, since it uses less digits than its factorization.

42540412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10635107 (or 10635105 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 42540412 is about 6522.3011276696. The cubic root of 42540412 is about 349.0871778342.

Adding to 42540412 its reverse (21404524), we get a palindrome (63944936).

The spelling of 42540412 in words is "forty-two million, five hundred forty thousand, four hundred twelve".