42505758 has 24 divisors (see below), whose sum is σ = 94239288. Its totient is φ = 13838832.

The previous prime is 42505733. The next prime is 42505759. The reversal of 42505758 is 85750524.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42505759) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 26685 + ... + 28232.

It is an arithmetic number, because the mean of its divisors is an integer number (3926637).

Almost surely, 2^42505758 is an apocalyptic number.

42505758 is an abundant number, since it is smaller than the sum of its proper divisors (51733530).

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

42505758 is a wasteful number, since it uses less digits than its factorization.

42505758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54968 (or 54965 counting only the distinct ones).

The product of its (nonzero) digits is 56000, while the sum is 36.

The square root of 42505758 is about 6519.6440086864. The cubic root of 42505758 is about 348.9923616908.

The spelling of 42505758 in words is "forty-two million, five hundred five thousand, seven hundred fifty-eight".