42561788 has 12 divisors (see below), whose sum is σ = 74895912. Its totient is φ = 21162960.

The previous prime is 42561773. The next prime is 42561793. The reversal of 42561788 is 88716524.

42561788 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 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, 28670 + ... + 30117.

It is an arithmetic number, because the mean of its divisors is an integer number (6241326).

Almost surely, 2^42561788 is an apocalyptic number.

It is an amenable number.

42561788 is a deficient number, since it is larger than the sum of its proper divisors (32334124).

42561788 is a wasteful number, since it uses less digits than its factorization.

42561788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58972 (or 58970 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 42561788 is about 6523.9396073232. The cubic root of 42561788 is about 349.1456386220.

The spelling of 42561788 in words is "forty-two million, five hundred sixty-one thousand, seven hundred eighty-eight".