42752881 has 4 divisors (see below), whose sum is σ = 42766452. Its totient is φ = 42739312.

The previous prime is 42752851. The next prime is 42752903. The reversal of 42752881 is 18825724.

42752881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 29062881 + 13690000 = 5391^2 + 3700^2 .

It is a cyclic number.

It is not a de Polignac number, because 42752881 - 2¹¹ = 42750833 is a prime.

It is a super-2 number, since 2×42752881² = 3655617667600322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42752881.

It is not an unprimeable number, because it can be changed into a prime (42752851) 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 in 3 ways as a sum of consecutive naturals, for example, 675 + ... + 9271.

It is an arithmetic number, because the mean of its divisors is an integer number (10691613).

Almost surely, 2^42752881 is an apocalyptic number.

It is an amenable number.

42752881 is a deficient number, since it is larger than the sum of its proper divisors (13571).

42752881 is an equidigital number, since it uses as much as digits as its factorization.

42752881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13570.

The product of its digits is 35840, while the sum is 37.

The square root of 42752881 is about 6538.5687271757. The cubic root of 42752881 is about 349.6673874125.

The spelling of 42752881 in words is "forty-two million, seven hundred fifty-two thousand, eight hundred eighty-one".