42518755 has 4 divisors (see below), whose sum is σ = 51022512. Its totient is φ = 34015000.

The previous prime is 42518753. The next prime is 42518759. The reversal of 42518755 is 55781524.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42518755 - 2¹ = 42518753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42518753) 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 3 ways as a sum of consecutive naturals, for example, 4251871 + ... + 4251880.

It is an arithmetic number, because the mean of its divisors is an integer number (12755628).

Almost surely, 2^42518755 is an apocalyptic number.

42518755 is a deficient number, since it is larger than the sum of its proper divisors (8503757).

42518755 is an equidigital number, since it uses as much as digits as its factorization.

42518755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8503756.

The product of its digits is 56000, while the sum is 37.

The square root of 42518755 is about 6520.6406893801. The cubic root of 42518755 is about 349.0279285701.

The spelling of 42518755 in words is "forty-two million, five hundred eighteen thousand, seven hundred fifty-five".