42540188 has 12 divisors (see below), whose sum is σ = 78824592. Its totient is φ = 20018880.

The previous prime is 42540167. The next prime is 42540191. The reversal of 42540188 is 88104524.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 312728 + ... + 312863.

It is an arithmetic number, because the mean of its divisors is an integer number (6568716).

Almost surely, 2^42540188 is an apocalyptic number.

It is an amenable number.

42540188 is a deficient number, since it is larger than the sum of its proper divisors (36284404).

42540188 is a wasteful number, since it uses less digits than its factorization.

42540188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625612 (or 625610 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 42540188 is about 6522.2839557934. The cubic root of 42540188 is about 349.0865651175.

The spelling of 42540188 in words is "forty-two million, five hundred forty thousand, one hundred eighty-eight".